NOAA Teacher at Sea
Chuck Gregory
Onboard NOAA Ship Thomas Jefferson August 12 – 24, 2007
Mission: Hydrographic Survey Geographical Area: New York Harbor Date: August 15, 2007
“Delay is preferable to error.” ~Thomas Jefferson
Here’s the Plan of the Day (POD):
Sunrise = 0606h Sunset = 1955h 0000h
Ship at Sandy Hook, NJ anchorage 0745h
Launch safety brief (Survey) 0800h
Deploy Launches (3101 & 3102) 1745h
Retrieve launches
Tides for Sandy Hook Low @ 0416h (-0.1 ft.) & 1624h (0.4 ft.); High @ 1020h (5.0 ft.) & 2225h (5.2 ft.). Currents in Sandy Hook Channel Ebb: 0120h (1.7 kts.), 1339h (1.6 kts.); Flood: 0717h (2.0 kts.) & 1930h (2.0 kts.). Weather from Sandy Hook to Fire Island AM: SW winds 10 kts., seas 2-4 ft.; PM: SW winds 10-15 kts., seas 2-4 ft.
My goal today is to improve my computer skills on the ship. After an oatmeal breakfast I met with Eric, the ship’s Electronics Technician. Eric was able to check out my laptop, get me a cable for the dial-up connection, and help me access NOAA charts for my Power Point Presentation. He was a huge help!
I am now able to catch up on my e-mails, surf the net, and get in touch with Teacher At Sea Coordinator, Elizabeth McMahon. Before I send out my log for day’s 1 & 2, I was asked to have Commander Schattgen (or his designee) review my material. He was quick to read my e-mail log and add a few edits. Now it’s time so send it to Liz in Silver Spring.
The CO also added a few ideas for me to consider – being the helmsman when the ‘TJ’ heads out to sea for house keeping, observing the data acquisition and reporting process, and checking out a multibeam calibration test or patch test. Since this is a once in a lifetime opportunity for my I ensured him I was open to anything…once! The rest of my day was spent getting all caught up with my computer work, and calling Roxann. I saw tomorrow’s POD and learned I will be once again heading out on Launch 3102 for 10 hours. The weather looks OK in the AM, but the wind and thunderstorms will pick up in the afternoon. Now where did I put those Dramamine? I was in bed finishing up Cannery Row by 2100h.
NOAA Teacher at Sea
Chuck Gregory
Onboard NOAA Ship Thomas Jefferson August 12 – 24, 2007
Mission: Hydrographic Survey Geographical Area: New York Harbor Date: August 14, 2007
“For here we are not afraid to follow truth wherever it may lead.” ~Thomas Jefferson
Happy Birthday, Dad!
Here’s the Plan of the Day (POD):
Sunrise = 0605h Sunset = 1956h 0000h
Ship at Sandy Hook, NJ anchorage 0700h
Took first Dramamine 0745h
Launch safety brief (Survey) 0800h
Deploy Launches (3101 & 3102) – I’ll be on the 3102 0830h
At first station of the day (somewhere between Coney Island, NY and Sandy Hook, NJ). Boot up computer systems and deploy multibeam. 0930h
Debug computer systems and we’re ready to track 1210h
Lunch and second Dramamine 1745h
Retrieve launches
Tides for Sandy Hook Low @ 0339h (-0.2 ft.) & 1543h (0.2 ft.); High @ 0938h (5.1 ft.) & 2145h (5.4 ft.). Currents in Sandy Hook Channel Ebb: 0041h (1.7 kts.), 1257h (1.6 kts.); Flood: 0640h (2.0 kts.) & 1851h (2.2 kts.). Weather from Sandy Hook to Fire Island AM: N winds 10-15 kts., seas 2-3 ft.; PM: S winds 5-10 kts., seas 2-3 ft.
One of the two 31 foot launches aboard the NOAA Ship THOMAS JEFFERSON. These launches are used to do the hydrographic survey work – side scan sonar and multibeam echo sounder – in coastal areas.
Today was a full day. After going to bed early (2030h) and rising early (0530h), I continued to bang away at my e-mails. The internet connection on the ship is dial up and quite slow. Or is it my understanding of computers that’s slow?!?! Probably the latter. Either way, I’m finding it frustrating to communicate with the ship’s computers. I’ll work on this tomorrow when I have the time. Breakfast was cereal and an English muffin. Then I got ready for the 0745h safety briefing and launch deployment. All went quite smoothly as I did my best to stay out of the way. Teamwork is huge on a vessel like the THOMAS JEFFERSON, and I was impressed by the teamwork effort to deploy and retrieve both launches. After the launch we were on our first station within 30 minutes. We had to deal with the customary computer snafu, but it was quickly fixed and we were soon doing our tracklines. Back and forth, east and west, forth and back, and west and east. Bill was at the wheel, Taylor was at the computers, Megan G. assisted with both, and I just watched, asked questions, learned, and helped out wherever possible.
Chuck studying some of the side-scan sonar (SSS) data as it is relayed from the SSS ‘towfish’ to the launch’s computer.
To help matters, the day was beautiful: warm, light breeze, and subsiding seas. I couldn’t have asked for better weather. Three times during our day we stopped to do a CTD cast. They use a SBE 19Plus Seacat with a stainless cage and tethered to a line. After two minutes of acclimating at the surface, Taylor would lower the CTD to the bottom and lift it back onto the boat. Then a computer cable was attached to the CTD, the CTD software booted up, and the data downloaded. Taylor and Megan taught me a lot about the launch computers and even let me attend to them for about an hour. Setting up the computer programs for the SSS Fish and the MultiBeam Echo Sounder (MBES) was complicated to this novice, thus the initial delay. There are screens to view the data as it is coming in from the side scan and another for the multibeam. There are screens to view the files as they are filling with data, screens to view the launch’s tracks, and screens to measure heave, pitch, and roll. And it was all fed into an on-board memory. Wow!
The 3102 was strong, but cramped for four adults. There were two comfortable seats on the boat – one for the coxswain and one for the survey tech – but we made the most out of every available space. Lunch was last night’s chicken made into sandwiches (not bad!), chips, chili, fruit, water, and cookies. There was other food to munch on and I found it hard not to eat with the sea air and full sun beaming down upon us. So much for my “food plan.”
Today I learned the importance of understanding computers, well planed navigation, and teamwork. The tracklines were well laid out and followed. Bill and Megan did a good job of maneuvering us around lower New York Harbor, as there were several recreational and commercial craft moving across the water. At no time were we in any danger. The day went smoothly and there was even a time of boredom after lunch when the launch was on course, the data was streaming in, and the weather was hot and sunny. Life was good!
We returned to the THOMAS JEFFERSON at 1745h tired and starved! After a full day at sea that was one of the best meatloaf dinners I’ve ever had!!! After dinner I returned to the ship’s computers, but continue to be frustrated as I try to get to my e-mails. Tomorrow my sole mission is to meet with engineer Eric and tap his computer expertise. For now I think I’ll call Roxann and go to bed early and do a little ‘Cannery Row’ reading.
NOAA Teacher at Sea
Chuck Gregory
Onboard NOAA Ship Thomas Jefferson August 12 – 24, 2007
Mission: Hydrographic Survey Geographical Area: New York Harbor Date: August 13, 2007
Chuck’s stateroom aboard the ship. During his voyage, Chuck (bottom bunk) shared his stateroom with Ensign Andrew Ostapenko (top bunk).
“He who knows best knows how little he knows.” ~Thomas Jefferson
Andy’s alarm clock went off around 0600h. I was already awake but comfortable, so I didn’t get up right away. I could hear that one of the Megan’s was using the shower. The staterooms on our deck have an interesting arrangement – two guys sharing a bath (shower and toilet) with two gals (Megan & Megan). The trick is to knock first and, once the coast is clear, to enter and lock the gal’s door from the inside. But the real trick is to remember to UNlock the gal’s door before leaving. Stay tuned…
After Andy used the shower it was my turn. I’ve used smaller showers, but not much smaller. The water pressure was good, and the temperature comfortable. I am now awake! I quickly dressed and went to the Mess Hall to catch up on some eating. I met the CO, and a few other crew. I also met Tom who is from the NOAA office in Silver Springs, Maryland (near DC). He is on board to observe and get a better idea what the ships do to gather the data. Breakfast was simple (I am trying to lose about 10 lbs.) – cereal, fruit and coffee – and I was off to take a few pictures before we headed out to sea.
The morning sky is clear and the day will be hot, so it’s probably a good thing we are going to be on the water. Next to us on the pier a group of visitors was getting the tour of the USS INTREPID. Manhattan and the surrounding area was enshroud in a gray haze. It’s going to be a learning day and I have a lot to learn. For now, I think it’s time for me to stop writing and take my Dramamine.
The Plan of the Day (Day #225) for the THOMAS JEFFERSON is as follows:
Sunrise = 0604h Sunset = 1958h 0000h
Ship moored alongside Stapleton Pier, Staten Island, NY 1100h
Ship underway 1130h
Deploy 31’ Launches (3101 & 3102) 1215h
Anchor @ Sandy Hook Anchorage 1545h
Retrieve launches
Tides for Sandy Hook Low @ 0258h (-0.2 ft.) & 1459h (0.2 ft.); High @ 0855h (5.0 ft.) & 2105h (5.6 ft.) Currents in Sandy Hook Channel Flood: 0604h (2.0 kts.) & 1814h (2.3 kts.); Ebb: 1212h (1.6 kts.) & 0041h (1.7 kts.) Weather from Sandy Hook to Fire Island AM: W winds 10-15 kts., seas 2-3 ft.; PM: NW winds 10 kts., seas 2 ft.
Today was a learning day as I wanted to learn more about the bathymetry instruments. The THOMAS JEFFERSON is equipped with a Klein 5000 Side Scan Sonar (aka SSS Fish). Informative place settings dot the mess hall and I was able to learn the basics of the equipment from them:
“The side-scan sonar is NOT just like a photo of the ocean floor. Objects get “stretched and distorted”. They need to be interpreted.”
“The SSS Fish data can be affected by: 1) tides, 2) survey speed, 3) sea conditions, 4) angle of incidence of sound waves, 5) launch (or ship) attitude (roll, yaw & heave), 6) etc.”
“When sound waves from the SSS Fish are reflected off an object a dark or “hard” return is created in the data. The object blocks the sound waves from traveling beyond it, which creates a “light colored shadow”.
“Unlike Multibeam Sonar, side-scan sonar created better images of the bottom when objects are off to the side, rather than directly beneath the instrument.”
“Side-scan sonar sends out an acoustic pulse out both sides of the vessel. The intensity of the acoustic reflection from each side is measured for a period of time. An image of a stripe of sea bottom is made with each pulse.”
At 1730h I met with Peter the hydrosurvey data technician and observed him downloading today’s data. Peter applied a series of corrections (heave, tide and sound velocity) to the data. This time consuming process took about two hours. This data will be sent to NOAA’s Atlantic Hydrographic Branch (AHB) where it will be reviewed, checked, cross checked, and additional data will be added if needed (e.g., from Army Corp). The raw data is also sent to the National Geographic Data Center in Boulder, CO where it is archived. From AHB the data is sent to NOAA’s Chart Division where it is made into the navigation charts we commonly use. FOO and Acting XO Chris informed me I will be going on one of the launches tomorrow. #3102 with SSS Fish and Multibeam (MBES). I can’t wait. I’m going to need a good night’s sleep as we’ll be on the launch for about 10 hours! Good night!!
NOAA Teacher at Sea
Chuck Gregory
Onboard NOAA Ship Thomas Jefferson August 12 – 24, 2007
Mission: Hydrographic Survey Geographical Area: New York Harbor Date: August 12, 2007
“Determine never to be idle. No person will have occasion to complain of the want of time who never loses any. It is wonderful how much may be done if we are always doing.”
~Thomas Jefferson
NOAA Teacher At Sea, Chuck Gregory, getting ready to leave from Portland, Maine. His destination is LaGuardia airport on Long Island, and from there, the NOAA Ship THOMAS JEFFERSON tied up to the Stapleton Pier on Staten Island.
I left the Portland, Maine Jetport at 1:55 pm for LaGuardia on US Airways. A nice, short flight. About 1 hour later we landed on Long Island. It was a beautiful day to fly. After a 45 minute wait for my duffel bag I grabbed a cab for the ride to Staten Island and 355 Front Street.
At 1610h – and $70 later (including tip) – we pulled up to the NOAA Ship THOMAS JEFFERSON (affectionately called the ‘TJ’). She was docked on the northern side of the Stapleton pier, hidden by the retired USS INTREPID – an “old” (commissioned by the Navy in 1943) aircraft carrier now acting as a floating sea, air and space museum. You may remember the USS INTREPID as the aircraft carrier that got stuck in the Hudson River mud not to long ago. No wonder, she is 872 feet long and an overall beam of almost 150 feet! And very, very gray.
In the distance, off the northern side of the pier is (from left to right) the Staten Island Ferry and piers, New Jersey, the Statue of Liberty & Ellis Island, the entrance to the Hudson River (the west side), Manhattan, the entrance to the East River (the east side), Governors Island, and Long Island (Queens & Brooklyn). In the foreground is the Inner Harbor of New York bustling with tankers, tugs, and ferries. Not many recreational boats in sight.
Destination – The NOAA Ship THOMAS JEFFERSON tied up at the Stapleton Pier, Staten Island, NY.
The THOMAS JEFFERSON is a member of the NOAA Fleet. She was delivered to the Navy in 1992 and commissioned by NOAA in 2003. She is 208 feet long, 45 feet broad, and has a draft of 14ft. She can berth 36 (crew and guests), and is packed with neat equipment (multibeam sonar, side-scan sonar, two 31’ launches, an emergency launch, and more hoses, cables and gizmos than I care to mention). She is scheduled to leave port tomorrow for 19 days. I will be getting a ride back to shore after day 12. The THOMAS JEFFERSON will not return to Staten Island, but head on to her home base of Norfolk, VA.
The first person I met when I crossed the gangway was Ensign Megan Guberski. She is a NOAA Corps Officer and a graduate from Smith College. She took me down a flight of stairs to my ‘stateroom’ and introduced me to my bunkmate, Ensign Andy Ostapenko. Andy is another NOAA Corps Officer who works on the important navigation systems. He is from Minnesota. He gave me a great tour of the vessel, showing me the six decks, emergency areas and equipment, various stations, bathymetry equipment, etc., etc. Boy do I have a lot to learn. Port, starboard, aft, forward, main deck, amidships, bridge, lounge, computer station, yadda, yadda! The one term that stuck was “Mess Hall”. It is located just up the main stairway and almost above our room. Nice location!
Andy and I chatted for about an hour and he kindly answered all of my basic questions – toilet protocol, shower, a good place on the ship to hang out, where to make cell phone calls, what we will be doing for the next 12 days, etc. He is a really nice person and seems like a great crewmember. I’m really interested to see him at work doing his navigation thing. In addition to Andy, I met the Commanding Officer (CO), Commander Tod Schattgen. Another nice person and easy to talk with. He really seems interested in the various activities occurring on the ship, but not in a controlling way. I am sure he and I will have more opportunities to talk during the voyage. I met the FOO (Facilities Operation Officer) and Acting XO, Chris Van Westandorp. Chris will be my ‘supervisor’ since the regular XO, Jim Crocker, is on leave.
While in the Mess Hall I ran into Engineer Charlie. A retired Navy person, Charlie was eager to give me the tour of the engine room area. And what a tour it was. This may be the only time I get to tour the engine area, so I took advantage of the moment. Engines, air conditioner, water treatment, sewage treatment, compressors, refrigeration systems, control room, workshop, etc., etc. And all compressed into a small space. There was enough equipment (and back-up equipment) to keep that vessel going for weeks! And that’s a good thing! Charlie was happy to show me around and give me some ear plugs for the engine room. It was loud and I needed them!
I’m trying my best to meet everyone on the ship and chat about what they do on THOMAS JEFFERSON and how they “found” NOAA. In general, it seems like there are two types of crew – the old ex-navy types, and the young recently-graduated types. A nice mix of both. Lots of experience able to teach the next generation. One piece of bad news: I forgot the cable that connects my digital camera to my computer. While I can take many photos I just can’t send them to NOAA until I return home. Bummer!
Another piece of bad news: Since I was busy getting the tour of the ship and missed dinner. Not like me, but I was too interested in the ship to stop for food. Once my initial excitement calmed down I was able to call my wife, Roxann, and have a snack before bed. After a few pages of “Cannery Row” I drifted off and slept quite well.
Candice Autry prepares to use the CTD instrument which collects water information related to conductivity, temperature, and depth.
Science and Technology Log
Today I had the opportunity to go out on the Fast Rescue Boat (FRB) to use the conductivity, temperature, depth (CTD) instrument in various places in the harbor. The CTD looks like a simple white tube; however, the capabilities of the CTD are far from simple! This devise provides essential data for scientists. Three of us boarded the small FRB, loaded the CTD, and were off to our locations. The first observation noted is that being on the fast rescue boat is a different boating experience compared to the launches and the THOMAS JEFFERSON. The “fast” part of the description is fitting; the boat moves quickly! The main function of the CTD is to collect data about how the conductivity and temperature of water changes relative to depth. Conductivity and temperature information is important because the concentration of the salt of the seawater can be determined by these two changing variables.
Candice Autry holds the CTD instrument. We collected information from three locations; once in the morning and then again in the afternoon.
The CTD devise can also help surveyors determine the speed of sound in the water. The information from the CTD is used in conjunction with multi-beam sonar providing accurate data about the depths of obstructions on the seafloor. The metal frame seen in the picture on the outside of the mechanism is called a rosette. We attached a rope to the rosette of the CTD, turned it on to collect data, held the devise in the water for two minutes for adjustment, then lowered the instrument down to the bottom of the seafloor. Once the CTD hits the bottom of the seafloor, the rope is pulled back up, the devise is put back into the fast rescue boat, turned off, and it is off to the next location to collect data. We deployed the CTD in three different locations in the morning and three different locations in the afternoon. At each place where data collection occurred, the location was recorded by using a global positioning system. Back on the THOMAS JEFFERSON, the information that the CTD collected is downloaded to a computer where specialized software is used to understand the data.
Personal Log
All of the experiences on the THOMAS JEFFERSON have been interesting and fun. Tomorrow I will be helping some of the crew on the deck of the ship. Exposure to saltwater often causes rust to occur; a ship requires constant maintenance! I am also realizing that this adventure will be over soon, with less than two days left. Until tomorrow…..
A closer view of the CTD.Surveyor Peter Lewit shares the chart used to collect data. The red lines in the white area represent the paths the launches took.
