engineer – Page 2 – NOAA Teacher at Sea Blog

July 27, 2022July 27, 2022

Laura Grimm: R/V vs. RV, July 27, 2022

NOAA Teacher at Sea

Laura Grimm

Aboard NOAA Ship Thomas Jefferson

July 4 – July 22, 2022

Mission: Hydrographic Survey of Lake Erie

Geographic Area of Cruise: Lake Erie

Date: July 27, 2022

Weather Data from my home office in Dalton, Ohio

Latitude: 40ᵒ 45.5’ N

Longitude: 081ᵒ 41.5’ W

Elevation: 1135 feet

Sky Conditions: Mostly sunny

Visibility: 10+ miles

Wind Speed: 7 mph

Wind Direction: NW

Air Temperature: 25 ᵒC (77 ᵒF)

Relative Humidity: 58%

Science and Technology Log

Research Vessel vs. Recreational Vehicle

I thought it would be interesting to compare some specifications of NOAA Ship Thomas Jefferson = TJ (research vessel) with my 2010 Toyota Sienna minivan + 2019 Viking camper = VV (recreational vehicle). I would also like to thank Chief Marine Engineer (CME) Tom Cleary and Husband Phil Grimm for information concerning the specifications of the research vessel and recreational vehicle, respectfully.

NOAA Ship Thomas Jefferson underway, as seen from a launch vessel — NOAA Ship Thomas Jefferson taken from the launch = **TJ Research Vessel**

a minivan and a camper trailer parked in a driveway — 2019 Viking camper + 2010 Toyota Sienna minivan taken in my driveway = **VV Recreational Vehicle**

What is the size of engine? How much power is produced?

VV = 3.5 Liter, 3500cc, 211 cubic inch / 265 Horsepower

TJ = 7,740 cubic inch, 2500 Horsepower. 12-cylinder mechanically injected EMD (a division of Caterpillar) diesel engine. This engine is commonly used on locomotives.

engine of NOAA Ship Thomas Jefferson — *Engine of Thomas Jefferson*

an engineer wearing protective earmuffs works on the innards of NOAA Ship Thomas Jefferson's engine — *Engine of Thomas Jefferson with the “hood” open*

What kind of fuel do you use and how big is your storage tank?

VV = Minivan uses 87 octane unleaded gasoline & has a 21 gallon fuel tank. Camper has a 20-pound liquid propane (LP) gas storage tank.

TJ = The ship uses #2 ultra-low sulfur diesel fuel and has a 131,789-gallon storage tank.

Where is the electricity stored? Quantity?

VV = Minivan has a 12-volt battery + Camper has a 12-volt “marine”, deep cycle battery

TJ = The ship has two 24-volt starting banks (2 batteries in series) for the emergency diesel generator (EDG), and two 24-volt emergency power banks for general alarm and other emergency circuits.

Where is the electricity produced? Quantity?

VV = Minivan: belt-driven alternator keeps battery charged. Camper: battery can be charged by the van or with the charger/inverter when plugged into AC.

TJ (underway / while at sea) = Three generators capable of generating 345 Kilowatts each (over 1 megawatt combined); one generator is online at a time. TJ has increased its energy efficiency (LED lighting, more energy efficient AC and appliances, etc.). Now, under normal house loads – not running any of the davits or cranes – TJ requires only 30% of the electricity generated with one generator.

TJ (onshore / while at port) = The ship has the capability to use power from shore via a plug on the port and starboard side. It uses power cables standard to all maritime ships. Each of its NATO plugs is capable of carrying 480 Volts of 3-phase power (400 amps). Typically, TJ only uses one of its NATO plugs while in port unless there is need for additional electricity.

Engineer, wearing protective ear muffs, checks fluids in one of three generators — *First Assistant Engineer (1AE) Perry checks fluids in one of three generators*

one of the generators aboard NOAA Ship Thomas Jefferson — *Each generator can generate 345 Kilowatts of electricity*

How does the driver / engineer know what is happening with the engine and generators?

VV = Dashboard of the van, gauges, check engine lights and warnings

TJ = Modern, Windows-based control room with remote capabilities. This system sends information to the control room, Bridge, and the Chief Engineer’s office. Lots of gauges and computer displays. Multiple lights and warnings if there are problems.

engineer stands in the control room next to a control panel with at least four monitors, levers, buttons — *1AE Perry checks gauges in the control room*

How about locomotion? How does VV or TJ move forward or backward?

VV & TJ = Both use an internal combustion engine that turns a propulsion shaft. Both use a series of reduction gears (transmission in the case of the van). Speed is maintained via a fixed gear ratio in TJ, unlike the van that has multiple gear ratios. The Chief Marine Engineer (CME), Tom Cleary, tried to convince me that the mechanics of locomotion are very similar in both vehicles except the drive shaft of TJ is much longer and larger and at the end turns a propeller; where the drive shaft of the van eventually makes the wheels turn.

How do the drivers know where to go?

VV = looking out the window, maps, GPS, and when all else fails ask the spouse

TJ = refer to my July 18, 2022, NOAA Teacher at Sea blog post, “Who is driving this ship?”

Do both vehicles have windshield wipers?

VV = 2 windshield wipers

TJ = 9 windshield wipers + 2 Clearview screens which are rotational window wipers that work via centripetal force.

a centripetal windshield wiper on one of the windows of NOAA Ship Thomas Jefferson's bridge; through the window we can see the foredeck — *Clearview Screen – Centripetal Windshield Wiper*

How big is the freshwater (potable water) tank?

VV = 23 gallons

TJ = 47,382 gallons. The ship also can make its own freshwater from saltwater using a reverse osmosis system

What is greywater and how big is the collection tank?

Greywater is the relatively clean wastewater from baths, sinks, washing machines, and other kitchen appliances.

VV = 25 gallons

TJ = 27,878 gallons

What is black water and how big is the collection tank?

Black water is sewage or the wastewater from toilets.

VV = 25 gallons

TJ = 29,440 gallons

What about the hot water systems?

VV = Has a 6-gallon water tank where water is heated using natural gas.

TJ = Has two separate hot water systems. The first uses electricity to heat water in a 60-gallon tank. This water is available for decks 01, 02, and 03. These are the three decks above the main deck. The other system has two 60-gallon tanks plumbed in series that serve the laundry room, galley, and staterooms on decks 2 and 3. These are the two decks below the main deck. Pumps constantly move water through the systems helping to provide (almost) instantaneous hot water from the tap.

What is the size and amenities of the kitchen (galley)?

VV = 2 burner gas stove, microwave, no conventional oven, two cupboards used for food storage, 1 cupboard used to store pots, pans, and other miscellaneous kitchen items, approximate size of counter next to the sink is 6 square feet.

TJ = Areas including food prep, cooking, serving, dish washer, dry storage and steward’s office are all in an area roughly 800 square feet.

What about where people eat (mess hall)? What is it like?

VV = One table (roughly 2’ x 3’) plus two benches. Entire area is approximately 24 square feet. A picnic table is also an option when available. It is provided by the campground.

TJ = Three tables (roughly 2.5’ x 10’), 20 chairs, multiple refrigerators, freezers, beverage & coffee dispensers, salad bar, sink, and snack shelves. Entire area is about 250 square feet.

Do these vehicles have refrigerators and freezers?

VV = 3 cubic foot refrigerator + ½ cubic foot freezer. Ice is made with a mini-ice cube tray.

TJ = All staterooms have a mini fridge. There are a mixture of small and home-sized refrigerators and freezers in the galley and mess hall for the convenience of the stewards and crew. There are also two very large walk-in refrigerators and freezers that are used by the stewards. An ice maker is housed in the galley and is used to fill coolers, etc.

How many berths (beds) are aboard?

VV = The camper and van each have two, making a total of 4 places where people could sleep.

TJ = There are 36 places for people to sleep, and the hospital has one bed.

What is a “head” and how many are there?

According to a Navy history website, “Head” in a nautical sense referring to the bow or fore part of a ship dates to 1485. The ship’s toilet was typically placed at the head of the ship near the base of the bowsprit, where splashing water served to naturally clean the toilet area.” (Icky!)

VV = One toilet/shower unit in the camper + a portable toilet if needed.

TJ = Each stateroom has access to a toilet/shower unit + a public toilet on the main deck.

How many stairs are there?

VV = Two steps into the camper

TJ = It all depends upon how a flight of stairs is defined and who you ask. If a flight is defined as at least 8 steps, the consensus among those asked is somewhere between 20 and 22 flights of stairs. TJ is essentially a 6-story building after all.

What about doors? How many are there?

VV = Van has 5 doors (if you count the trunk); camper has 1 door

TJ = Too many to count! There are five doors, however, that are very important. They are the internal watertight doors that isolate areas of the ship in case of emergencies. There are also additional watertight doors that one uses to go from the internal spaces to the decks of the ship.

one of the watertight doors on NOAA Ship Thomas Jefferson. it has a large, heavy handle. it says "Watertight Door Keep Closed" — *Closed watertight door*

view of the watertight door when opened; we can see the seal around the curved edges — *Open watertight door*

What is the outer cover made of?

VV = Van is painted steel; camper is painted aluminum

TJ = Painted steel. The deckhands really do a fantastic job of keeping TJ in great repair!

What are the external dimensions of each vehicle?

VV = Van: Length: 17”, Width: 6’ 7”, Height: 5’ 10”; Camper: Length: 16’ 7”, Width: 7’ 4”, Height: 10’; total length of the Van + Camper = 33’ 4”

TJ = Length: 208’, Width (beam): 45 ‘, Height (from the keel to the wind birds): ~ 100 feet

Meet the Crew

Chief Marine Engineer (CME) Tom Cleary got his first paycheck for a boat job when he was 16 years old and has not stopped working on boats since. This extremely competent engineer is originally from Cape Cod and has worked for NOAA for over 20 years – the last 11 years have been aboard Thomas Jefferson. His off-ship activities revolve around his wife and four children, and maintaining an 80-year-old home.

Tom states that that, “A jack of all trades is a master of none, but still always better than a master on one”. He enjoys the variety presented to him by his work duties. No two days are alike. He oversees 9 people, and his duties require mechanical, electrical, plumbing, and managerial skills.

He is a classic hawsepiper. This means that he did not go to a maritime academy to become an engineer. He learned from the ground up first by working on sight seeing boats and ferries in the Cape Cod area to working on several NOAA ships. From working as a deckhand, steward, to chief engineer – he has literally crawled up the hawsepipe.

If budget was not a limiting factor, what could I invent for you that would make your job easier? He wanted to be clear that he meant no disrespect, however, he replied that he would like some robots. Much of his job is spent dealing with people. Budget management meetings, payroll, planning schedules, rating performance, training, drills, and dealing with “hotel” services for the crew (refrigeration, air conditioning, plumbing, hot water issues, etc.) take up much of his time. Tom likes the crew, however, if there were fewer people and more robots working on the ship, he would have more time on engineering challenges. (I wonder if he has contemplated the challenges presented by maintaining a gang of robots?)

Engineers Perry and Cleary pose for a photo in the galley. CME Clearly is wearing work overalls and a radio. — *1AE Perry and CME Cleary*

What is the difference between a boat and a ship?

According to Britannica Kids, “A ship is a large boat that can carry passengers or cargo for long distances over water. People have been using ships for transportation, exploration, and war since ancient times.”

Parts of a Ship

Diagram of a ship with the following parts labeled: 1 - Funnel, 2 - Stern, 3 - Propeller, 4 - Port, 5 - Anchor, 6 - Bulbous bow, 7 - Bow, 8 - Deck, 9 - Superstructure, 10 - Starboard, 11 - Bridge — *Diagram showing the main parts of a ship*

“Most ships are much larger than most boats, but they have many of the same parts. As on boats, the front of a ship is called the bow. The back is the stern. A ship’s left side is known as the port side. The right is the starboard side.

A ship’s frame, or body, is called the hull. The keel is like the ship’s backbone. It is a central beam that runs along the bottom of the ship from front to back. The keel keeps the ship from tipping over.

Ships usually have many decks. The decks are like the floors of a building. Cabins for passengers, engine and control rooms, and spaces for cargo are often on different decks.

An engine inside the ship provides energy to propellers at the back of the ship. The propellers push the ship through the water. The rudder, which is also at the back of the ship, helps in steering. When the ship is not moving, a heavy metal anchor may be lowered into the water. This keeps the ship from floating away.” (Britannica Kids)

This excellent video clearly defines all the parts of a ship labeled in the diagram above.

Watch this video to help you learn the parts of a ship!

Did you know?

Earlier, I stated that I use GPS (Global Positioning System) on my phone to help navigate while driving. Just what is GPS? It is a highly accurate satellite-based navigation and location system. With a GPS receiver (like my phone), users can quickly determine their precise latitude, longitude, and altitude.

If I need to drive from Los Alamos, NM to Los Angeles, CA., I place these end points into Google Maps and GPS helps me plan a path to drive. Some people use GPS-capable watches to help them determine how far they have run and how much elevation they have gained. We also use GPS on the ship. At any one time, the survey is using between 25-30 GPS satellites at a time – some from other countries.

Something else I learned today is that GPS is the system developed by the USA. Other countries have their own systems that work in much the same way. Countries cooperate and use each other’s satellite systems. Here is a list of GPS-like systems used by other countries.

GPS = United States
GLONASS = Russia
Galileo = European Union
QZS = Japan
BeiDou = China
SBAS = Korea

Watching this NASA Space Place video, “GPS and the Quest for Pizza” will also help you understand how GPS works.

GPS and the Quest for Pizza

Personal Log

For the Little Dawgs . . .

Q: Where is Dewey? Hint: You use these to climb up or down.

Dewey the beanie monkey sits on a textured black surface — *Dewey, what are you sitting on?*

A: Dewey is sitting on a step of a flight of stairs. All the steps on the ship have a non-skid surface. They are very effective at giving you sure footing as you climb up or down the stairs. There are flights of stairs inside and outside of the ship. They go from one deck to another. All in all, there are between 20-22 flights of stairs on Thomas Jefferson.

Dewey the beanie monkey on a stair on NOAA Ship Thomas Jefferson — *Dewey is sitting on one of the ship’s many flights of stairs.*

Many a fine sailor . . .

With only a few more days to go on this incredible journey, I was excited to read on the next day’s Plan of the Day (POD) that I would be going out on the launch (small boat) to help with surveying close to shore. We had a large area to survey and also pick up some “holidays” in areas that were previously surveyed. A data holiday is an area that was missed in a previous survey. I packed my backpack, got a good night’s sleep, and ate a small breakfast to prepare for the day.

a black-and-white photo of a cowboy riding a bucking bronco — *TJ Launch = Bucking Bronco*

Let’s just say, it was a rough day. The waves were not terribly high (~ 2 feet), however, the launch rode like a bucking bronco! I was fine for the first 30-45 minutes. Then, I started to feel all hot and woozy. After “revisiting” my breakfast several times and losing my TAS hat overboard, the crew brought me back to the ship. I was taken to the infirmary where the medical officer took my vitals every 15 minutes for an hour and encouraged me to eat some saltines and drink Gatorade. After a long nap, shower, and Ramen noodles for supper, I felt much better.

At supper, the three crewmembers who were on the launch with me said that they tried to look for my hat. They found a dead fish, but they thought it wouldn’t look very nice on my head. I kidded back that Dewey, who was in my backpack, threw up a little bit, also. It sure was an adventure!

I cannot say enough nice things about the crew members who took care of me in my time of need. They were professional, kind, and had my wellbeing first and foremost in their words and actions. I am very grateful. Thank you!

Later that evening the Chief Boatswain Pooser told me, “Many a fine sailor has lost their lunch on the launch.” It made me smile. I was finally part of the club.

Laura, wearing a Teacher at Sea hat, hugs her husband, who is earing a NOAA Ship Thomas Jefferson t-shirt, in front of a chain-linked fence; the ship is visible through the fence — *Mrs. Grimm and her First Mate Husband Phil*

Please note – As I complete this post, I am now home. I am on land, however, I have more to share. My final blog posts will be sent from my home office. (Funny. . . Why does the room seem to be rolling from side to side? No one told me that I would still feel the rocking of the ship the day after my disembarkation. I don’t mind. It is pleasant reminder of my time aboard Thomas Jefferson.)

July 6, 2022July 6, 2022

Oktay Ince: Reporting from the Ship Engine Room, June 28, 2022

NOAA Teacher At Sea

Oktay Ince

Aboard NOAA Ship Thomas Jefferson

June 20- July 1, 2022

Mission: Hydrographic Survey

Geographic Area of Cruise: Lake Erie

Date: Tuesday, June 28, 2022

Latitude: 41° 36′ 5 N

Longitude: 81° 30.7′ W

Altitude: 138 m

Weather Data from Bridge

Wind Speed: 1.6 kts

Surface Water Temperature: 22.2 °C

Air Temperature (Dry Bulb Temperature): 18.2 °C

Wet Bulb Temperature: 12.7 °C

Relative Humidity: 55 %

Barometric Pressure: 10.24 in

Science blog

Today, I am going to share some science and technology information from the engineering department. The engine room is located on the two decks below the main deck. The engineers have many tasks and responsibilities on the ship. I am going to share some of the main ones.

The first responsibility is to make sure the ship engine is working properly. Engineers work around the clock to make sure that in the case of an emergency, they can act quickly. As you may imagine, the ship has a huge engine with many cylinders. I was very lucky to see the engine before and after it was working. When we anchored our ship near the Rocky River, we stopped the engine. The ship’s electric power is powered by three diesel generators. This powers various systems in the ship such as AC, heating, computers, refrigerators etc.

When we were ready to get underway from anchorage for our next journey on Lake Erie, I thought it was a good idea to observe the engineering department and see how they start and operate the engine. Anyway, I went down there about 20 minutes before our departure. Engineers were busy as bees around the machines touching, clicking, opening/closing valves. There was a constant movement. They all know what to do, including me. My job is to watch how the ship engine operates. I was roaming around to see what would be the best place for me to videotape the moment when they start the engine. Luckily, I found one, and “loudly” waited there. Oh, I forgot to mention. Before you enter this place, you have to have hearing protection. I put my ear plugs in and on top I put on ear muffs. I was told the noise was going to be so loud. Once they checked all the parts, it was time to start the engine. All the pistons started to move, and it reminded me of the sound of my mom’s old sewing machine, where there was constant ticking, clicking sounds. It was fascinating to witness that moment.

Starting the ship’s engine

The ship engine is fully operational

Oktay and an engineer pore over notebooks at a table in the engine room — Learning about engineering concepts

four computer monitors in a line, above a control panel — Learning about engineering concepts

Hear this! Every important part in the ship has a back up. Some of them even have third, or fourth back up. For example, when I went to the bridge to learn about how they control the ship up there, the first thing they told me was that everything has a back up. If one screen shows a map, here is the same map on a different screen. So the engine also has a back up, an auxiliary engine, in the case of an emergency it would quickly kick in. However, the auxiliary engine does not have the same power as the main engine. Its role is to keep the ship out of danger, until the main engine issue is resolved, or the ship can pull into port. There was also a steering room down in the engine room in case the deck loses its steering control, they can manually steer the ship down below. Isn’t that cool! For that purpose, there is always an engineer on watch who monitors the steering gear around the clock. Remember, the ship works 24 hours.

Besides engines, the ship has a water treatment system down in the engine room. To be honest, this was the moment where my excitement made its zenith point. You would understand this when you read what I am about to say on this. The water treatment system consists of many tubes which contain membranes to filter the water, desalinate it, and make it ready to drink. The system uses the concept of reverse osmosis (RO) to make drinkable water out of any water systems, even the ocean. However, I must note that even though the technology allows you to make the water, engineers make decisions whether to make the water based on several factors. First, it is preferred to be at least 12 nautical miles offshore in open water. This is because the water is less likely to have pollutants that could clog the filters, which would quickly lead to other issues for engineers to deal with. Deep water is also preferable for similar reasons; sediment, mud, and sand that can be churned up in shallow waters is another way for the filters to be clogged. In the case of Lake Erie, engineers decided to NOT make water because we are working relatively close to shore, and would not be an efficient use of resources. This is because the ship fills all its potable water tanks (~50,000 gallons!) in port using municipal water from the City, which is enough to supply the ship for several weeks. The ship uses ~1,500 gallons of freshwater a day! But remember, that is for a 30 person crew – eating/drinking, showering, cleaning, etc. Long story short, we have sufficient water in the tanks for the duration of our mission. Therefore, there is no need to make more water.

large pipes in an array; tubing; wires — Reverse Osmosis (RO) System

Okay, let’s go back to the concept of desalination by using reverse osmosis. It sounds complicated, right? It is quite simple in principle. To be honest, even myself, who trained in biology both during my bachelors and graduate school, thought that so many people in the world can’t use ocean/sea water to solve the water crisis because the technology is very “expensive” and that is not an option. On the contrary, it is a very simple science concept and it is relatively cheap when you think of the product and the benefits it has. However, why is it still not accessible to everyone in the world? I guess the question will stick in my mind from now on.

Let’s get back to the science concept of osmosis and reverse osmosis. In osmosis, you have a semi-permeable membrane where water moves freely without energy input to the system until the two sides of the membrane have equal number of water molecules. The osmotic pressure to the membrane is equal in both sides due to having the same amount of water molecules on both sides of the membrane. Cells in our body are semi-permeable and water can go in and out of the cell based on the concentration of solutes in both sides of the membrane. You can see the concept of osmosis in every biological system. We have even applied the concept of osmosis since ancient times to preserve foods by dehydration with salt or sugar such as jams, pickles, pastrami and so on. The microorganisms that make food go bad can’t survive without the presence of water. That’s why honey is the only natural product that never goes bad due to its high concentration of substances.

In reverse osmosis, the movement involves water molecules passing through a higher substance concentration (sea water) to a lower substance concentration. As you can see it is the opposite of osmosis. Water should move the other way around. How do we achieve that? When we apply a pressure high enough to the point where it is higher than the osmotic pressure to the saline water, it causes fresh water to flow through the membrane while holding back the salt. The higher the applied pressure above the osmotic pressure, the higher the rate of fresh water transports across the membrane. Here you have freshwater on the other side of the membrane. Pure and simple. Based on the membrane you use in the system, it also traps all the other pollutants as well. Mind blowing! This is how the ship makes its own freshwater.

So far, we talked about engines and the RO system of the ship. We also have generators down there. They are the ones that generate electricity by using fuel. The ship generally runs on one generator at a time, but may require two during some operations. However, the ship has three generators on board in case others fail.

I guess I’ll leave it here and let you learn more about the science and technology of ship engines and RO systems on your own!

Personal Log

As educators, we often fail to connect our discipline to other disciplines. We usually don’t understand how one concept has many other applications. If being a Teacher at Sea on Thomas Jefferson taught me one thing, it’s that science concepts intervene with other disciplines. If students don’t see these connections, or how the concepts they learned apply to different circumstances, then I believe they fail to see the bigger picture. As a result, “true” learning will never be achieved.

I was a scientist by training before I became an educator, and of course I know what osmosis is in biological systems. However, I must confess that I did not see the applications of osmosis this far, not even during my graduate studies. There has not been a single educator who showed me the concept of osmosis in this perspective. I don’t blame them. They probably haven’t had a chance to learn that way too. All I remember is the “U” shaped diagram with a semi-permeable membrane in the middle, and each side having different concentrated solutions, which shows how the water moves freely. And then they explained how once it reached equilibrium, both sides of the membrane had equal concentration. From there, they talked about different solution types, energy requirements of moving molecules from one side to another, etc. I guess you all remember this from your biology or related courses.

From this teaching, did you ever think about how this science concept is used in different applications? Like in this case, reverse osmosis to make freshwater from seawater. If you did, lucky you! You are one of those lucky ones- I didn’t have that opportunity. At least, I did not think about it at the moment. All I worried about was learning the concept and moving on. I guess my teachers at that time had the same “vision” as me. Teach the concept, test it with multiple choice questions and then move on thinking that students learned. When those students come across the same concept in different settings, they mostly fail. The justification of the educator would be like, “I don’t know why they failed. I taught them the materials and had great scores. They must have had a bad day during the testing.” Yeah! Yeah! Yeah! I know those.

Sorry for my long thoughts about our educational system. We really should, at least, teach science concepts to our classroom through its real world application. Only then, would they appreciate the power of the science concept they are learning, which could open a lot more creative ideas on their own, leading to innovation. These were thoughts that sparked my mind thanks to reverse osmosis (RO) system technology on the ship.

Another important thing that came to mind while I was down in the engine room was the importance of teamwork, and how important it is to always have a back up. We all know the importance of teamwork, and how the members of each team are equally important. But when it comes to teaching teamwork to the kids who have not experienced real teamwork, do they really understand its importance? If we want our students to work as a team in our classrooms, we need to design our lessons in a way that if one of the team members fails to complete a task assigned to them, the whole task fails along with it. Once they know this, I think the true understanding of teamwork will prevail to the students.

These were the thoughts that I have been contemplating while witnessing all the cool things I saw in the engine room. Who knows how students would be impacted if they saw these things?

Did you know?

Waves in Lake Erie are mainly caused by winds because of its shallow nature. If those waves move away from their generation zone, they become more regular and then are referred to as swells.

June 12, 2019

Lona Hall: Rockin’ at the NALL on Ugak, June 10, 2019

NOAA Teacher at Sea

Lona Hall

Aboard NOAA Ship Rainier

June 3 – 14, 2019

Mission: Kodiak Island Hydrographic Survey

Geographic Area of Cruise: Kodiak Island, Alaska

Date: June 10, 2019

Time: 1932 hours

Location: Saltery Cove, Kodiak Island

Weather from the Bridge:

Latitude: 57°29.1359’ N

Longitude: 152°44.0488’ W

Wind Speed: 17.2 knots

Wind Direction: N (353 degrees)

Air Temperature: 12.13° Celsius

Water Temperature: 9.44° Celsius

Lona on a launch vessel — Sitting in the sun on a launch, Rainier in the background

Science and Technology Log

For my second time out on a launch, I was assigned to a shoreline survey at Narrow Cape and around Ugak Island (see chart here). Survey Tech Audrey Jerauld explained the logistics of the shoreline survey. First, they try to confirm the presence of charted features (rocks) along the shore. (As you may remember from my last post, a rock is symbolized by an asterisk on the charts.) Then, they use the small boat’s lidar (LIght Detection And Ranging) to find the height of the rocks. Instead of using sound pulses, as with sonar, lidar uses pulses of laser light.

Point Cloud: Each dot represents a lidar “ping”, indicating the presence of features above the waterline

Once a rock was identified, Audrey photographed it and used the laser to find the height of the rock to add to the digital chart. The launch we used for the shoreline survey was RA-2, a jet boat with a shallow draft that allows better access to the shoreline. We still had to be careful not to get too close to the rocks (or to the breakers crashing into the rocks) at certain points around Ugak Island. The line parallel to the shore beyond which it is considered unsafe to survey is called the NALL (Navigable Area Limit Line). The NALL is determined by the crew, with many factors taken into account, such as shoreline features, marine organisms, and weather conditions. An area with many rocks or a dangerously rocky ledge might be designated as “foul” on the charts.

Amanda and Audrey discussing the locations of rocks along the shoreline

I must pause here to emphasize how seriously everyone’s safety is taken, both on the small boats and the ship itself. In addition to strict adherence to rules about the use of hard hats and Personal Flotation Devices in and around the launches, I have participated in several drills during my stay on the ship (Man Overboard, Fire and Emergency, and Abandon Ship), during which I was given specific roles and locations. At the bottom of each printed Plan of the Day there is always a line that states, “NEVER shall the safety of life or property be compromised for data acquisition.” Once more, I appreciate how NOAA prioritizes the wellbeing of the people working here. It reminds me of my school district’s position about ensuring the safety of our students. No institution can function properly where safety is not a fundamental concern.

Career Focus – Marine Engineer

Johnny Brewer joined the Navy in 1997. A native of Houston, Texas, many of his family members had served in the military, so it seemed natural for him to choose a similar path after high school. The Navy trained him as a marine engineer for a boiler ship. Nearly 15 years later he went into the Navy Reserve and transitioned to working for NOAA.

Working as an engineer requires mental and physical strength. The Engineering Department is responsible for maintaining and updating all of the many working parts of the ship–not just the engine, as you might think! The engineers are in charge of the complex electrical systems, plumbing, heating and cooling, potable water, sewage, and the launches used for daily survey operations. They fix everything that needs to be fixed, no matter how large or small the problem may be.

Johnny emphasized how important math is in his job. Engineers must have a deep understanding of geometry (calculating area, volume, density, etc.) and be able to convert measurements between the metric and American systems, since the ship’s elements are from different parts of the world. He also described how his job has given him opportunities to visit and even live in new places, such as Hawaii and Japan. Johnny said that when you stay in one place for too long you can become “stuck in a box,” unaware of the world of options waiting for you outside of the box. As a teacher, I hope that my students take this message to heart.

Personal Log

In my last post I introduced Kimrie Zentmeyer, our Acting Chief Steward. In our conversation, she compared the ship to a house, the walls of which you cannot leave or communicate beyond, except by the ship’s restricted wi-fi, while you are underway. I would like for my readers (especially my students) to imagine living like this, confined day in and day out to a single space, together with your work colleagues, without family or friends from home. How would you adjust to this lifestyle? Do you have what it takes to live and work on a ship? Before you answer, consider the views from your back porch!

Word of the Day

bulkhead – a wall dividing the compartments within the hull of a ship

Q & A

Are there other NOAA ships working in Alaska?

Yes! NOAA Ship Fairweather is Rainier’s sister-ship and is homeported in Ketchikan, Alaska. Also, the fisheries survey vessel, NOAA Ship Oscar Dyson is homeported in Kodiak, not far from where we are currently located.

What did you eat for dinner?

This evening I had sauteed scallops, steamed broccoli, and vegetable beef stew. And lemon meringue pie. And a cherry turnover. And ice cream.

June 6, 2019June 6, 2019

Jill Bartolotta: The Ins and Outs of Going, May 31, 2019

NOAA Teacher at Sea

Jill Bartolotta

Aboard NOAA Ship Okeanos Explorer

May 30 – June 13, 2019

Mission: Mapping/Exploring the U.S. Southeastern Continental Margin and Blake Plateau

Geographic Area of Cruise: U.S. Southeastern Continental Margin, Blake Plateau

Date: May 31, 2019

Weather Data:

Latitude: 28°29.0’ N

Longitude: 079°34.1’ W

Wave Height: 1-2 feet

Wind Speed: 15 knots

Wind Direction: 155

Visibility: 10 nautical miles

Air Temperature: 27.6 °C

Barometric Pressure: 1013.7

Sky: Few

Science and Technology Log

Today and tomorrow I am learning all about the who and how of making the ship go. Ric Gabona, the Acting Chief Marine Engineer, has been teaching me all about the mechanics of powering the ship, managing waste, and providing clean drinking water. Today I will focus on two aspects of making it possible to live on a ship for weeks on end. First, I will teach you about waste management. Second, I will explain how freshwater is made to support cooking, drinking, cleaning, and bathing needs. In conjunction, all of these systems contribute to our comfort on board but also our safety.

Wastewater Management

Waste on board has many forms and it all must be handled in some way or it can lead to some pretty stinky situations. The main forms of waste I will focus on include human waste and the waste that goes down the drains. The waste is broken down into two categories. Black water and gray water. Gray water is any water that goes down the drain as a result of us washing dishes, our hands, or ourselves. Gray water is allowed to be discharged once we are 3 miles from shore. The water does not need to be treated and can be let off the ship through the discharge valve. Black water is water that is contaminated with our sewage. It can be discharged when we are 12 miles from shore. Black water goes into a machine through a macerator pump and it gets hit with electricity breaking the solid materials into smaller particles that can be discharged into the ocean.

Discharge of gray or black water has its limitations. These discharge locations follow strict rules set in the Code of Federal Regulations (CFR) and by the International Convention for the Prevention of Pollution from Ships (MARPOL). The CFR are set by the federal government and the regulations tell you where (how far from shore) you are allowed to discharge both gray and black water. However, sometimes Okeanos Explorer is in areas where black water cannot be discharged so the black water must be turned into gray water. At this point, once the black water has been mashed it will pass through a chlorine filter that will treat any contamination and then the waste can be discharged. However, there are places where nothing can be discharged such as Papahānaumokuākea Marine National Monument in Hawai’i. When in these no discharge areas the ship will store the gray and black water and then discharge when regulated to do so.

It is important to follow these regulations because as Ric says, “We are ocean stewards.” It is important that ships such as Okeanos Explorer be able to explore the ocean while making the smallest environmental impact as possible. The engineers and other ship and science mission personnel are dedicated to reducing our impact as much as possible when out at sea.

Making Water

Water makes up 60% of the human body and is vital for life. However, 71% of the water on earth is saltwater, not able to be taken up by humans, making it challenging to access freshwater unless you live near an inland freshwater system like where I come from up in Ohio along the Great Lakes. While out at sea, we have no access to freshwater and we cannot store freshwater from land on the ship so we must make it. On Okeanos Explorer freshwater is made using two types of systems, reverse osmosis and desalination. Reverse osmosis is used by seabirds to turn saltwater into freshwater. Saltwater passes through a semipermeable membrane allowing the smaller water particles to pass through while leaving the larger salt particles and other impurities behind. If you are seabird, you excrete this salt by spitting it out the salt glands at the top part of your bill or if you are a ship out through a separate pipe as brine, a yellow colored super salty liquid. The other method on the ship used to make water is desalination. Desalination is the process of boiling salt water, trapping the water that evaporates (freshwater), and then discharging the salty water left behind. The engineers could use a separate boiling system to heat the salt water however they have a much more inventive and practical way of heating the water. But before I can let you know of their ingenious solution we must learn how the engines run. Oops! Sorry, I need to go. Need to switch my laundry. So sorry. We will explore ship movement and the engines in the next blog. Stay tuned…

flow meters for potable water and brine — Can you see the yellow colored brine and the clear colored potable water?

Filtered water station on the ship. Look familiar? You may have one like this in your school.

Personal Log

I really enjoyed learning all about the mechanics of operating the ship. It takes lots of very skilled people to make the equipment work and I love the ingenuity of the machines and those who run them. Space is limited on a ship and I am just fascinated by how they deal with the challenges of managing waste and making freshwater 50 plus nautical miles from coast for up to 49 people. Today was a great learning day for me. I do not know much about engines, wastewater treatment, and water purification systems so I really learned a lot today. I now have one more puzzle piece of ship operations under my belt with many more to go.

Aside from my lesson in thermodynamics, combustion, chemistry, physics, and other sciences that I have not touched since college, I learned about the safety operations on the vessel. Today we practiced a fire drill and an abandon ship drill. We learned where we need to go on the ship should one of these events ever occur and which safety gear is needed. I donned my immersion suit and PFD (Personal Flotation Device) to make sure they fit and all the pieces/parts work. Being in the ocean would be a bad time to realize something isn’t right. Donning the safety suit was a funny situation for all movement is super restricted and you feel like a beached whale trying to perform Swan Lake on point shoes.

Jill in immersion suit — Me in my immersion suit, fondly known as the gumby suit.

However, with some help from my friends we were all able to get suited up in case an emergency should arise.

Tonight I look forward to another sunset at sea, some yoga on the deck, and seeing a spectacular star display.

Did You Know?

Eating an apple a day while at sea can keep seasickness at bay.

Ship Words

Different terms are used to describe items, locations, or parts of the ship. As I learn new words I would like to share my new vocabulary with all of you. If there is a ship term you want to know more about let me know and I will find out!

Galley: Kitchen

Mess Deck: Space that crew eat aboard ship

Fantail: Rear deck of a ship

Pipe: Announcement on the ship via a PA system

Muster: Process of accounting for a group of people. Used in safety drills on a ship such as a fire or abandon ship drills.

Stateroom: Sleeping quarters on the ship

Abeam: On the beam, a relative bearing at right angles to the ship’s keel

Bearing: The horizontal direction of a line of sight between two objects

Animals Seen Today

1 flying fish

Whales (Too far away to tell what they were but we saw their spouts!)

September 19, 2018

Kristin Hennessy-McDonald: Engineer for a Day, September 18, 2018

NOAA Teacher at Sea

Kristin Hennessy-McDonald

Aboard NOAA Ship Oregon II

September 15 – 30, 2018

Mission: Shark/Red Snapper Longline Survey

Geographic Area of Cruise: Gulf of Mexico

Date: September 18, 2018

Weather Data from the Bridge

Latitude: 2901.62N

Longitude: 0932.87W

Sea Wave Height: 0m

Wind Speed: 6.63 knots

Wind Direction: 203֯

Visibility: 10 nautical miles

Air Temperature: 32.4

Sky: 0% cloud cover

Science and Technology Log

My first day onboard was spent following around 2^nd Engineer Will Osborn. Will is an officer in the Merchant Marines, and a NOAA Augmentation Pool Engineer assigned to the Oregon II. He invited me to follow him around and learn how the engineers prepare the ship for sea. One of the duties of the engineers is to check the liquid levels of each of the tanks prior to sailing. They do this by performing soundings, where they use a weighted measuring tape and a conversion chart to determine the number of gallons in each of the tanks.

2nd Engineer Will Osborne performing a sounding on deck

Performing a sounding on the dirty oil tank

The engineering team then prepared the ship to sail by disconnecting shore power and turning on the engines aboard ship. I got to flip the switch that disconnects the ship from shore power. I followed the engineering team as they disconnected the very large cable that the ship uses to draw power from shore. I then got to follow 2^nd Engineer Will as he turned on the engines aboard ship.

Kristin Hennessy-McDonald turning off the shore power in the engine room

Once we set sail, the science team met and discussed how longline surveys would work. I am on the day shift, which is from noon to midnight. We got the rest of the day, after onboard training and group meetings, to get used to our new sleep schedule. Because I was on the day shift, I stayed up and got to watch an amazing sunset over the Gulf.

Gulf Sunset

Gulf Sunset

Our second day out, we set our first two longlines. The first one was set before shift change, so the night shift crew bated the hooks and set the line. My shift brought the line in, and mostly got back unbaited hooks. We got a few small Atlantic Sharpnose (Rhizoprionodon terraenovae) sharks on the line, and used those to go over internal and external features that differentiated the various species we might find.

After the lines were in, it was time for safety drills. These included the abandon ship drill, which required us to put on a submersion suit, which is affectionately referred to as a Gumby suit. You can see why below. It was as hard to get into as it looks, but it will keep you warm and afloat if you end up in the water after you abandon ship.

Kristin Hennessy-McDonald in the Gumby Suit

Personal Log

I have learned a few rules of the boat on my first days at sea. First, always watch your head. The stairwells sometimes have short spaces, and you have to make sure not to hit them on your way up. Second, always keep a hand free for the boat. It is imperative at sea that you always have a hand free, in case the boat rocks and you need to catch yourself. Third, mealtimes are sacred. There are 31 people aboard the boat, with seating for 12 in the galley. In order for everyone to get a chance to sit down and eat, you can’t socialize in the galley.

Did You Know?

In order for the crew to have freshwater to drink, the Oregon II uses a reverse osmosis machine. They create 1000-1200 gallons of drinkable water per day, running the ocean water through the reverse osmosis generator at a pressure of 950 psi.

Quote of the Day

And when there are enough outsiders together in one place, a mystic osmosis takes place and you’re inside.

~Stephen King

Question of the Day

How do sharks hear in the water?