Author: tprentice

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Tonya Prentice: Sailing into New Horizons, August 26, 2024

NOAA Teacher at Sea
Tonya Prentice
Aboard NOAA Ship Henry B. Bigelow
August 8 – August 24, 2024

Mission: Northeast Ecosystem Monitoring Survey 

Geographic Area of Cruise:  Northwest Atlantic Ocean

Date: September 20, 2024

Weather Data from Bass Harbor, Maine
Latitude: 44.253636º  N  
Longitude: 68.34944º W
Wind Speed: 14 mph
Air Temperature: 15° Celsius (59° F)


Science and Technology Log

Tremont Consolidated School’s Drifter Buoys: Exploring Ocean Data in Real-Time!

I was so thrilled to learn that Tremont Consolidated School (TCS) had been given two drifter buoys, allowing our students to participate in a cutting-edge, real-world scientific endeavor. Through the National Oceanic and Atmospheric Administration (NOAA) Global Ocean Monitoring and Observing Program, our students will track these buoys as they gather crucial data from the ocean. This is a hands-on, dynamic opportunity that infuses real-time ocean observing system data into our science curriculum! NOAA Adopt a Drifter Program

Track Tremont Consolidated School’s drifting buoys here:
https://adp.noaa.gov/trackadrifter/tremont-consolidated-school

a screenshot from the webpage for Tremont Consolidated School's drifting buoy. It lists the adoption date (August 9, 2024) and the ID number (WMO #5301664.) It displays the Drifter ID card, with info on where it was deployed, and shows a graph of temperature readings over time, and a small map of the trajectory.
View of the tracking webpage for Drifter #1

What’s a Drifting Buoy? A drifting buoy, also called a drifter, is a floating data collection device that travels with ocean currents. These drifters are equipped to record various ocean parameters such as sea surface temperature, salinity, and wave height, all while transmitting this data hourly via satellite. The buoys provide valuable insights into oceanic conditions that impact weather forecasts, climate models, and even search and rescue operations.

Why Deploy One? The data collected by drifters offers key information that supports a wide range of scientific and practical applications. This data helps scientists understand how the ocean circulates, predict the movement of marine debris or oil spills, and make better weather predictions. By tracking our adopted drifters, TCS students will gain firsthand experience in how this scientific data is used to analyze the ocean and its far-reaching impacts.

Bringing Science to Life for TCS Students At TCS, students in our science classes will be tracking and recording the drifter buoys’ locations and analyzing the data collected. They will plot coordinates on maps, explore ocean currents, and make connections between the data they collect and global environmental patterns. This interactive project brings abstract science concepts into a tangible experience, encouraging inquiry, problem-solving, and environmental stewardship.

Tonya, wearing bright orange overalls, a life vests, and a hard hat, poses for a photo with the drifting buoy. in this view we mostly see the drogue (folded up tail.) it's a beautiful day with bright blue skies and sparking ocean in the distance.
Me deploying the first drifter buoy.
close up view of the buoy: a round blue ball, with stickers reading TREMONT CONSOLIDATED SCHOOL
Drifter Buoy #1
In front of the ship's railing, Tanya, left, looks down at the drogue (folded tail of the drifter) while David, right, holds the buoy section. They both wear life vests. It's a beautiful day, with blue skies and sparkling ocean.
David Richardson (right), NOAA Research Fishery Biologist, and me (left) deploying drifter buoy #2.
another view of the buoy portion of the drifter, which looks like a bright blue (hard plastic) ball. On this side we see a sticker
Drifter Buoy #2
Tanya, wearing orange overalls, a life vest, and her Teacher at Sea hat, lifts the buoy portion of the drifter up toward the rail. It looks heavy. Chris, at right, grips the folded drogue in his left and leans down to pick up cable on the deck with his right hand.
Chris Melrose (right), NOAA Research Oceanographer, and me (left) deploying drifter buoy #2.
Tonya, wearing orange overalls, a life vest, and her Teacher at Sea hat, stands at the railing facing the ocean. She holds the buoy portion of the drifter over the railing, preparing to deploy. Chris stands to her right with the folded drogue in his hands, ready to toss this in afterward.
Chris Melrose (right), NOAA Research Oceanographer, and me (left) deploying drifter buoy #2.

Personal Log

Sailing into New Horizons: A Farewell as a NOAA Teacher at Sea

As I sit here reflecting on my time aboard the NOAA research vessel, it’s hard to believe this chapter has come to an end. When I first applied to the NOAA Teacher at Sea program, I knew I would embark on a unique adventure, but I could never have imagined the profound impact this journey would have on me, both as an educator and as a person.

The early mornings watching the sunrise over the open ocean, the long hours of data collection, and the camaraderie of working alongside scientists and crew members—each moment has left an indelible mark. One of the highlights was observing the way oceanographic data is collected in real-time. Deploying CTDs, collecting plankton samples, and witnessing firsthand the vastness of our oceans reinforced the importance of understanding and protecting these ecosystems.

The lessons I’ve learned during this voyage are invaluable. I can’t wait to bring the excitement of real-world science into my classroom, showing my students that science isn’t just something they read about—it’s something they can experience. From tracking ocean currents to analyzing marine species, my students will have the opportunity to become oceanographers themselves, right in the classroom. I know the drifter buoy project, in particular, will captivate their imaginations.

This journey has rekindled my passion for inquiry-based learning and has reminded me that we, as educators, are lifelong learners. I’ve also come to understand the deep responsibility we have to educate the next generation about the importance of our oceans and the need for sustainable practices.

Of course, this experience would not have been possible without the incredible support of NOAA and the crew of the research vessel. Thank you to the scientists who patiently answered my endless questions and to the crew members who made me feel like part of the team. Your dedication to ocean science is inspiring.

As I sail back toward the shores of Maine, I’m filled with excitement for what lies ahead. I look forward to integrating what I’ve learned into my 7th and 8th-grade curriculum, empowering my students to become stewards of the environment. I also hope to encourage more teachers to take part in this incredible program.

Though this chapter is ending, I know it’s just the beginning of a deeper connection with the ocean and its mysteries. As Jacques Cousteau once said, “The sea, once it casts its spell, holds one in its net of wonder forever.” And I, for one, am happily caught in that net.

Group photo on the aft deck of the ship. The A frame towers in the background. There are fifteen people in this photo. Tanya is in the center of the front row, wearing her Teacher at Sea shirt and hat.
The Henry B. Bigelow Northeast Ecosystem Monitoring Survey Crew!

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Four people stand on the bridge of the ship. In the foreground, Tanya, wearing her Teacher at Sea hat, stands near the control panel and smiles for the photo, while Ensign Remigio stands nearby, looking down. Two other NOAA Corps officers stand at a different control panel in the background but face the camera.
ENS Danielle Remigio (left) teaching me how to drive the ship.
Tanya, wearing orange overalls and a life vest over her Teacher at Sea t-shirt, kneels on one knee near the end of the bongo net. She holds a hose nozzle in her right hand and sprays the net into a bucket. She looks up to smile for the camera.
Me spraying down the Bongo Nets.
Out on deck, Tanya wears a large, bright orange survival suit zipped up over her mouth and nose. She holds her hands out in a fun pose for the camera. In the background we see two other crewmembers working to don theirs.
Me trying on my cold water immersion suit.

In the computer lab, Chris and Tonya sit at a desk, both looking at the same computer screen. Tonya extends her right arm to write on a datasheet attached to a clipboard, while her left, resting below, holds an intercom microphone.
Chris Melrose (back), NOAA Research Oceanographer, and me (front) monitoring the CTD.
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Tonya Prentice: NOAA’s CTD and Carousel, August 20, 2024

NOAA Teacher at Sea

Tonya Prentice

Aboard NOAA Ship Henry B. Bigelow

August 8 – August 24, 2024

Mission: Northeast Ecosystem Monitoring Survey 

Geographic Area of Cruise: Northwest Atlantic Ocean

Date: August 20, 2024

Weather Data from the Bridge
Latitude: 42.2212 º  N   
Longitude:  70.29659º W
Wind Speed: NW at 12 mph
Air Temperature: 19.8° Celsius (67.64° F)
Sea Temperature: 19.3 Celsius (66.74° F)


Science and Technology Log

Monitoring Ocean Parameters with NOAA’s CTD and Carousel Bottle Sampler

The CTD and Carousel Sampler are essential tools NOAA uses to monitor ocean conditions. “CTD” stands for Conductivity, Temperature, and Depth, the primary parameters this device measures. By running profiles of the water column from the surface to the bottom, the CTD helps us understand key ocean characteristics. The Carousel Sampler paired with the CTD allows collection of water samples at depth for laboratory analysis.

What Does the CTD Measure?

  • Conductivity: Helps determine the salinity of the water.
  • Temperature: Measures the thermal profile of the water column.
  • Depth: Tracks how deep the CTD is during data collection.

Together, these measurements give us a detailed profile of the water column, helping scientists monitor what we call “the Big Four” parameters.

Carousel: Collecting Water Samples

The CTD and Carousel is equipped with twelve Niskin bottles, which are used to collect discrete water samples from specific depths. The bottles are numbered 1-12, and are “fired” (closed) at different depths to capture water samples.

For example, bottle 1 might be fired near the bottom (a few meters above the seafloor), bottle 2 at 10 meters, bottle 3 at the determined chlorophyll maximum (C Max), and bottle 4 couple just below the surface. Multiple bottles are often fired at each depth to collect additional water. These samples provide critical data about the ocean’s chemical properties at various levels.

view of the carousel sampler resting on the deck of NOAA Ship Henry B Bigelow at night. A white cylindrical metal frame holds twelve gray cylindrical bottles in a round. The bottles have opened stoppers connected at the top and bottom. the CTD probe, at the center of the round, is not visible. Tonya has added yellow text boxes to label the following: carousel, Niskin bottles, top stopper, valves, bottom stopper.
CTD Carousel Bottle Sampler

Preparing the CTD Carousel Bottle Sampler

Before deployment, we ensure that all the stopper valves at the top and bottom of each Niskin bottle are closed. We also hook the wires at the top and bottom to prepare the bottles to open at the designated depths. Once the CTD is ready, it is carefully lowered into the water, beginning its descent through the water column.

Analyzing the Key Parameters

Once the water samples are retrieved, we focus on analyzing these key parameters:

  • Dissolved Inorganic Carbon (DIC)
  • pH
  • Total Alkalinity (TA)
  • Nutrients
  • Chlorophyll
view of a large scientific instrument, a cylindrical metal frame containing a round of tall dark gray sample bottles, suspended over the rail of a ship. The sky and the water are both a dark blue, fading into one another at the horizon.
Lowering the CTD into the water.
photo of a computer monitor displaying a graph; the graph itself is not really readable
Monitoring the CTD as it descends.
two women kneel on deck on either side of the carousel, a large cylindrical scientific instrument, which rests on a rubber mat. They are wearing life vests and gloves, and one wears a hard hat. the woman on the right grasps tubing and sample bottles as she smiles for the camera. the one on the left kneels near a stack of white plastic buckets. through the railing, we see the sky and the ocean are muted colors; the image appears washed out.
Karen (left) and Tonya (right) collecting water samples from the CTD Carousel .
close-up view of numbered water sample bottles stored in a 5 by 4 styrofoam tray, inside a gray plastic bin with lid raised to reveal the sample bottles.
DIC, pH, and TA samples.
view down into a freezer of small styrofoam trays filled with narrow blue-capped sample bottles
Nutrients and Chlorophyll stored in freezer at -80°C.

Storing the Samples

After processing, the nutrient and chlorophyll samples are stored in a freezer kept at -80°C (-112°F) to preserve them for further analysis. Mercuric chloride is added to the DIC, pH, and TA samples to preserve them until they are measured in the laboratory. These samples provide invaluable insights into ocean health. The DIC, TA and pH samples help us monitor the effects effects of ocean acidification— which occurs when carbon dioxide dissolves into the ocean. The chlorophyll samples measure the amount of phytoplankton living in the water. Like plants on land, microscopic phytoplankton carry out photosynthesis, produce oxygen, and are at the base of the marine food web.

Understanding these parameters allows us to monitor the ocean’s health and better predict how it may change in the future. For more information on ocean acidification, check out this resource: NOAA Ocean Acidification.

By closely monitoring DIC, TA and pH we can track important changes in our oceans, providing critical data for research and conservation efforts.

Personal Log

Life on a 12-Hour Work Shift at Sea

Working a 12-hour shift at sea might sound intense, but there’s often some downtime between stations and even a few hours after the work is done. The time you get can vary depending on how far apart each station is. Sometimes it’s just enough to process samples before heading to the next station, while other times you have several hours to relax and recharge.

So, how do you spend that free time on a ship? There’s no shortage of options. You could enjoy a movie in the lounge area, dive into a good book, play a board or card game with other crew members, or head to the flying deck to spot seabirds and marine life, or simply take in the stunning ocean views. Another interesting way to pass the time is visiting the bridge, where you can see how the ship is navigated, maneuvered, and commanded.

Let’s not forget “Activities and Crafts with Katy,” which can bring a whole new adventure to your day. Today, this included visiting the lab and looking at the different species of marine organisms that have been collected, such as stingray barbs, dogfish, and scallop shells. Katy then showed us how to make our own Acadian Redfish otolith (ear bone) earrings. “Scientists use the ear stones (bones) as a way to age the fish. Also called otoliths, they are bones found right behind the skulls of bony fishes.” (Smithsonian)

The balance of work and downtime can make those long shifts much more manageable and even enjoyable, offering moments to connect with colleagues and the environment around you in a way that few people get to experience.

view of two rows of large brown comfy-looking recliners facing a tv screen mounted on the wall above cabinets. there is a bookcase off to one side.
The Lounge area.
the flying deck - the uppermost deck on the ship - is bisected by the ship's yellow mast. a tall metal frame appears to be shade structure but may serve additional purposes. There are picnic benches and beach lounge chairs.
Flying Deck
two people sit on chairs that are mounted to the deck and adjustable in height. they face a metal shelf mounted to the ship's railing to serve as a desk. there is a laptop on the desk. they each wear binoculars around their necks but at the moment are turning to smile for the camera.
Allison and Liam observing birds from the flying deck.
close-up view of two otoliths on a table surface
Acadian Redfish otolith
close view, from the neck up, of Tonya at right and Katy at left showing off their earrings. Tonya wears a Teacher at Sea hat.
Tonya (me) and Katy wearing our otolith earrings.
view of the bridge, no people visible. Row of navigation computers, a chart table in the center, line of windows looking out at a harbor.
The Bridge

Did You Know?

“One atmosphere is equal to the weight of the earth’s atmosphere at sea level, about 14.6 pounds per square inch” (NOAA Water Pressures at Ocean Depths). Beneath the ocean’s surface, water pressure increases by approximately one atmosphere for every 10 meters of depth.

To illustrate just how intense this pressure can be, we conducted a simple yet fascinating experiment. We decorated 16 ounce styrofoam cups with artwork, then placed them in a mesh bag attached to the CTD Carousel Sampler. The CTD , along with the cups, was submerged to a depth of about 500 meters (1640.42 feet), where the pressure equals roughly 725 pounds per square inch (psi). We repeated this process by submerging the cups to 200 meters (656.17 feet), which equals about 291.18 psi.

As the cups descended into the depths, the increasing water pressure caused them to shrink dramatically because the air inside the cups was compressed. This simple experiment vividly demonstrates how powerful the forces at play beneath the ocean’s surface can be.

three styrofoam cups in a row on a table or desk surface. the leftmost cup is the standard size, undecorated. The middle cup is 30-40% smaller. It's colored with marker to be a flower scene, with "2024" written around the top rim. The rightmost cup is the smallest, probably less than half the size of the original. It says Go Wildcats, August 2024, Henry B Bigelow.
This is a normal size ounce styrofoam cup (left side). Here is the cup after it was submerged 200 m below the ocean surface (middle). The last cup was submerged 500 m and then again at 200 m (right side).


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Tonya Prentice: Time for Bongos, August 15, 2024

NOAA Teacher at Sea

Tonya Prentice

Aboard NOAA Ship Henry B. Bigelow

August 8 – August 24, 2024

Mission: Northeast Ecosystem Monitoring Survey 

Geographic Area of Cruise: Northwest Atlantic Ocean

Date: August 15, 2024

Weather Data from the Bridge
Latitude: 42.26980º  N   
Longitude: 66.08756º W
Wind Speed: 11 mph due N
Air Temperature: 15.4° Celsius (59.7° F)
Sea Temperature: 18.2 Celsius (64.8° F)


Science and Technology Log

Behind the Scenes: Collecting Plankton Samples on Our Mission
During this mission, we will be collecting plankton samples from over 120 stations in the Gulf of Maine and further south along the East Coast (see the figure below; Summer ECOMON Track Lines).

a political map of the waters of the northeastern shelf, focused on Newport, RI, extending as far north as Southern Maine and as far south as eastern New Jersey. a bright green icon approximately the shape of a vessel sits on Newport, surrounded by radial lines marking every 30 degrees. large blue dots throughout the coastal waters mark sampling stations. They are connected by straight black line segments showing the track of the survey. there are also some smaller black dots connected by bright green line segments. extra labels mark Georges Bank (east of Cape Cod), Maine, and Mount Desert Island.
Summer EcoMon Track Lines

But why focus on plankton? Plankton are the foundation of all oceanic food webs, crucial for the survival of larger fish, marine mammals, and birds. Any changes in plankton biomass can have ripple effects throughout the entire ocean ecosystem, impacting a wide range of species.

By studying plankton, we gain insights into the health of our oceans. The data collected from these samples will be invaluable in estimating the populations of certain fish species and identifying key spawning areas. Moreover, we can observe how fish populations are shifting or altering their habitats in response to environmental changes and other stressors. (NOAA Fisheries)

Collecting plankton samples during this mission is a collaborative effort, requiring the expertise of the NOAA Corp, engineers, deckhands, survey technicians, and scientists. Together, we work to deploy, retrieve, and prepare the plankton samples for research.

We use two types of Bongo nets for sampling: Baby Bongos, set in a 20 cm frame, and Big Bongos, set in a 60 cm frame. Each net has a specific purpose: one is labeled “I” for Ichthyoplankton and the other “Z” for Zooplankton. These nets, made from 333 µm mesh, are equipped with flow meters to measure the volume of water filtered during each tow.

Once the Bongo nets are lowered into the water, the Conductivity, Temperature, Depth (CTD) sensors immediately start gathering conductivity, temperature, and depth data. The nets are then lowered to about 10 meters above the sea floor and gradually pulled back to the surface. Care is taken to ensure the nets don’t touch the ocean floor, avoiding the need for a recast. Today, for instance, we collected samples from around 230 meters deep!

When the Bongo nets are retrieved, we promptly rinse down the nets to flush the plankton into the codends at the bottom of the nets. The nets are then untied, and the plankton are flushed into a sieve pan.

Next, we carefully rinse the plankton from the sieve into a glass jar, preserving the sample by adding 5% Formalin. The jar is then topped off with seawater, labeled with the station/event, and inverted several times to ensure the sample is well-mixed. On average, we collect about 32 jars of plankton per day.

Finally, the plankton are ready to be shipped off to a lab to be sorted and counted.

Steps for collecting plankton:

View from a side deck of NOAA Ship Bigelow as chain lowers nets into the water; the openings of the nets are two large round circles, and the fine mesh plankton nets extend down in cones from each ring. Two crewmembers wearing hard hats and life vests stand at the rail to guide the nets down. It is sunset, and the sun is almost at the horizon, creating a band of bright orange between the dark blue water and sky.
1. Lowering the Bongo Nets into the water.
top down view of two pairs of bongo nets rising out of the ocean. The smaller pair are attached to the cable above the larger pair. Their fine-mesh nets extend in cones beneath circular openings. The sky and the water are gray.
2. Baby Bongo and Big Bongo coming out of the water.
close-up view of the flowmeter, a small metal cylinder with a counter and a plastic white tail that spins - the whole instrument looks like a small missile or dart. we can see that it is attached to part of the bongo nets.
3. Record Flowmeter Reading.
Two people wearing orange overalls, baseball caps, and life vests use hoses to spray the mesh of a plankton net that is piled on the deck of the ship.
4. Spraying the Bongo Nets down to flush the plankton to the bottom.
close-up view of the very end of the plankton net, showing bubbly brownish substance that we take to be plankton.
5. Plankton flushed into the Codend of the Bongo Net.
top down close-up view of a sieve containing greenish-brown stuff
6. Beautiful Gooey Plankton!
a person wearing a sweatshirt, baseball cap, overalls, and life vest kneels on the deck of the ship. she holds a sieve in her left hand and a small squeeze bottle in her right. she is right next to a curved white wall that displays the letters N O A A
7. Rinsing the plankton out of the sieve into the jar.
close up view of two glass jars containing a cloudy mass of pinkish plankton, and some visible larval fish
8. Plankton preserved in 5% Formalin
a more top-down view of two glass plankton sample jars, containing pink cloudy plankton. in this view, we can see the printed labels affixed to the white screw caps of each jar. These two jars are stacked on top of others in a cardboard box with dividers.
9. Ready to be shipped to the lab!

Personal Log

Life Aboard the NOAA Ship Henry B. Bigelow: A 24/7 Operation

The NOAA Ship Henry B. Bigelow never sleeps, which means someone is always awake and hard at work. This is no cruise ship—everyone aboard the NOAA Ship Henry B. Bigelow has a vital role to play. Most crew members work 12-hour shifts, ensuring the ship’s operations continue smoothly around the clock. In addition, all the department crew are responsible for safety drills, and are trained in firefighting and lifesaving equipment.

As part of the science crew, I work from 3 am to 3 pm, while my roommate takes over from 3 pm to 3 am. Our team of scientists are constantly collecting and uploading data to support our mission. Engineers, deckhands, and survey technicians work shifts from 12 am to 12 pm or 12 pm to 12 am.

Engineers keeping everything running efficiently and addressing any technical issues that may arise. They are responsible for the safe and proper operation of a ship’s machinery and equipment and other mechanical and electronic equipment onboard.

Survey technicians assist in the operations, monitoring, handling, and maintenance of various scientific gear. This includes annotating records and recording data; assist in the staging and set-up during preparations for, and at the completion of oceanographic or fishery research. They also perform oceanographic or fisheries observations, measurements, and calculations, assisting in the preparations, installation, deployment and recovery of oceanographic or fishery research equipment. (NOAA Survey Department)

The Deck Department operates the cranes and winches to deploy scientific equipment, and maintain the material condition of the ship. Electronics Technicians maintain the ship’s computer network and vital emergency communication and navigation equipment.

The NOAA Commissioned Officer Corps (NOAA Corps) operate and navigate the ship, and monitor oceanographic and atmospheric conditions, ensuring our safety and guiding us through each phase of the mission.

And let’s not forget some of my favorite crew members—the stewards, who keep us well-fed with amazing meals and plenty of delicious snacks.

Given the non-stop nature of our work, it’s important to remember that someone is always sleeping. This means being mindful of your noise level: avoid slamming doors, walk quietly down the halls, and always use your “inside voice” when moving about the ship. When living and working in such close quarters, professionalism, civility, and respect are essential to maintaining a happy and welcoming work environment.

a bulletin board labeled Meet the Crew! Tacked to the board with colored push pins are printed photos of 26 people, grouped by department: NOAA Corps (8 people), Engineering Department (7 people), Electronic Tech Department (2), Survey Department (3), Deck Department (4), Steward Department (2)

Did You Know?
There are currently 42 species of dolphins and seven species of porpoises. (Whale and Dolphin Conservation). Check out these videos captured this week of both Bottlenose and Common Dolphins riding alongside the NOAA Ship Henry B. Bigelow! Can you spot the difference between Bottlenose and Common Dolphins?

Bottlenose Dolphins
Common Dolphins
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Tonya Prentice: Getting Ready, August 11, 2024

NOAA Teacher at Sea

Tonya Prentice

Aboard NOAA Ship Henry B. Bigelow

August 8 – August 24, 2024

Mission: Northeast Ecosystem Monitoring Survey 

Geographic Area of Cruise: Northeast Atlantic Ocean

Date: August 11, 2024

Weather Data from Newport, RI
Latitude: 41.53036 º  N   
Longitude: 71.31850º W
Wind Speed: SSW at 8 mph
Air Temperature: 25° Celsius (77° F)


Science and Technology Log

Although our mission has been delayed by few days, there is still plenty of work to be done on board the NOAA Ship Henry B. Bigelow.  The deck crew and engineering department have been working hard to prepare for our departure tomorrow morning.

Today, I had the opportunity to tag along with Kate and Patrick, two of our engineers, to learn more about the pre-check work they were completing.  “On board ship, it is very important to keep the updated record of the quantity of liquids (in all forms) present in various tanks.” (Marine in Sight) 

As part of the pre-check, Kate and Patrick recorded the readings from sensors, then manually checked the level of each fuel, bilge, and ballast water tank in a process known as “sounding” the tanks. They applied Kolor Kut paste to sound tape in the measurement range reported by the sensors and lowered the tape to the bottom of the tank. Upon retrieval, the paste changes color—from light pink to red for fuel and from brown to red for water—indicating the levels.

Kate and Patrick compared these manual measurements with the sensor readings to ensure the sensors were accurately reporting the levels. Then they used a table to convert the measurements to the number of barrels. Soundings are crucial for identifying leakages or losses of fuel, maintaining the ship’s stability, and ensuring that sufficient fuel and water are aboard for the voyage.

two people kneel on the deck of the ship over an open (uncapped) hole. Kate, left, holds a measuring tape reel and turns the crank. Patrick, right, guides the end of the measuring tape into the reel, gripping it with a rag. An open can of pink glue sits nearby.
Kate (left) and Patrick (right) checking the fuel levels.
Two people stand in the engine room. Patrick, right, holds the tape measure reel. Kate, left, guides the end of the tape measure toward something on the wall.
Kate (left) and Patrick (right) checking the ballast levels.
photo of a printed data sheet attached to a clipboard. It's labeled Weekly Tank and Void Soundings. It has sections for Ballast, Void, Fuel Storage, Day Tanks. Some measurements have been filled in by hand.
Weekly Tank and Void Sounding Data
close up view of a measuring tape that has been painted pink with gauging glue. The lower portion, which has been dipped into the fuel tank, is a darker pink color.
Dark pink color marks the fuel level on the tape measure.
close up view of a hand gripping a container of Kolor Kut Gasoline Gauging Paste.
Kolor Kut Gasoline Finding Paste
view of tools on the floor around an uncapped hole to the fuel tank.
Sounding Tape Measure (top) and wrench used to open fuel cap.

Personal Log

Meet My Roommates! There are so many amazing people aboard NOAA Ship Henry B. Bigelow for this mission.  I would like to introduce you to my roommates who were kind enough to let me interview them for my blog and share information about their science career paths.

Karen stands in a field holding a Canada goose under her right arm. She wears a long sleeve shirt, black gloves, and a baseball cap.
Karen Beatty (Animals were handled in accordance with state and federal permits.)
Emma stands one what is probably a boat in a marsh and holds up a snake for a photo. She wears orange fish gloves and a green high visibility vest.
Emma Venarde (Animals were handled in accordance with state and federal permits.)

What is your science degree, and how did you become interested in this field?

Emma Venarde recently graduated from Brown University with a double degree in Environmental Science, focused on Environmental Justice, and Music. Emma has always had a love for nature and became passionate about climate change as a child. She joined the Youth Climate Program and realized that she wanted to better understand human impact and discover ways to help humans and other animals and how they are affected by climate change.

Karen Beatty earned her bachelor’s degree in Zoology from Michigan State University, worked as an environmental consultant for five years, and recently graduated with a master’s in Ecology from Penn State University. Initially, Karen was interested in becoming a veterinarian, but she learned that she preferred working with exotic animals and focusing on their behavioral health. This led her to an interest in becoming a zookeeper but eventually transitioned to wildlife biology. For her master’s, Karen aimed to deepen her quantitative knowledge and understanding of anthropogenic disturbances.

What motivated you to become a NOAA at-sea volunteer?

Last summer, Emma participated in the NOAA Chesapeake Bay Office (NCBO) and decided to apply for another internship opportunity through NOAA student opportunities. She sought more experience in fieldwork, particularly in collecting data and understanding how it’s used for ocean energy. This unique experience aboard the NOAA Ship Henry B. Bigelow is something she wouldn’t typically get, and she’s thrilled to be part of it.

Karen joined this mission as a fellow of the Knauss Fellowship. She believes this fellowship will not only enhance her fieldwork experience, especially in data collection and analysis but will also help her achieve a federal career aligned with conservation and policy development.

What advice would you give my students who are interested in a science career?

Emma: We need more people who are not just good at understanding science but are also able to communicate, collaborate, and think critically.

Karen: Be well-rounded! Interdisciplinary learning is crucial. Having a solid understanding of and skills in math, communication, policy, and regulations is essential to being a successful scientist.

This is our stateroom, also known as a cabin, that we will be sharing for the next two weeks. It’s a cozy space designed for practicality, consisting of four bunks, a small office area, lockers for our personal belongings, and a bathroom with a shower. While the quarters are tight, it’s amazing how efficiently everything is arranged to make life at sea as comfortable as possible. We’ve settled in nicely, and this space will be our little home away from home as we embark on this exciting mission aboard the NOAA Ship Henry B. Bigelow.

view of lockers in stateroom; we can see survival suits and life preservers stacked on top
Lockers
view of a small desk, with a computer monitor, next to a locker.
Office Space
view of shower, toilet, sink.
Bathroom and shower
four bunks, stacked two high, along a single wall. each bunk has a curtain. there is a metal ladder that leads to each upper bunk, and storage underneath each lower bunk.
Our bunks!

Did You Know?

Scup, also known as porgy, “can live a relatively long time, up to about 20 years.” (NOAA Fisheries)

Scup enjoying a snack alongside the NOAA Ship Henry B. Bigelow.

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Tonya Prentice: Introduction, August 2, 2024

NOAA Teacher at Sea
Tonya Prentice
Aboard NOAA Ship Henry B. Bigelow
August 8 – August 24, 2024

Mission: Northeast Ecosystem Monitoring Survey 

Geographic Area of Cruise: Northeast Atlantic Ocean

Date: August 2, 2024

Weather Data from Southwest Harbor, Maine
Latitude: 44.2805 º  N  
Longitude: -68.326º W
Wind Speed: WSW at 11 mph
Air Temperature: 18.89° Celsius (66° F)

Introduction

Hello, my name is Tonya Prentice. I am so excited to begin my adventure aboard NOAA Ship Henry B. Bigelow for the NOAA Teacher at Sea 2024 Season. I teach middle school science for grades 5-8 on Mount Desert Island, Maine, at Tremont Consolidated School in Bass Harbor. This is my 17th year of teaching, and I am passionate about engaging my students with project-based learning, community service opportunities, and STEM activities.

In my role as an educator, I strive to create engaging and interdisciplinary learning experiences for my students with a focus on ocean literacy. My students are the next generation of environmental stewards. They live on an island, and many of their families are lobstermen and/or fishermen who rely on the health of the ocean. We are fortunate that our school is located in a beautiful area that borders Acadia National Park and is across the street from Bass Harbor. This allows me to take my students hiking, kayaking, snowshoeing, and exploring the ecosystems all around us.

The health of our ecosystems may be altered in different ways by human impact. It’s vital that my students understand how climate change and coastal flooding may impact their lives in the future. As a NOAA Teacher at Sea, I am excited to bring real-world scientific research into my classroom and inspire my students with firsthand experiences. I look forward to sharing my adventures and discoveries with you, and I hope to ignite a passion for marine science and environmental stewardship in both my students and readers.

Stay tuned for updates from the sea!

A woman and a man pose for a selfie on a kayak in front of glassy water reflecting a lovely sunset. They are wearing sweaters, life vests, beanies, and sunglasses.
Tonya Prentice (right)
six students (with their backpacks) sit in a line, facing away from the camera, on top a large round rock overlooking a small inlet surrounded by forested hills; small islets are visible beyond.
Top of Bubble Rock
view of at least four harbor seals basking on rocks in bright blue ocean water; in the distance we see a farther shoreline and mountains.
Harbor seals
Three people lean over clumps of seagrasses in a tide pool area. They have placed a one meter square of PVC pipe down on the grasses. Two of them use a measuring tape while another picks through the grass. A purple sample bucket with a plastic bag and laminated identification sheets sits off to the side. The people wear high-visibility vests.
Green crab research
three people kayak toward a tree-lined coastline, their backs to the camera. they wear life vests. the water is calm beneath a blue sky.
Kayaking in the salt marsh
view from the ocean of a lighthouse perched on the rocky cliffs of an island coastline. The light itself is painted white, with a black top, and nearby are a few additional buildings that are white with red roofs. The cluster of buildings is surrounded by tall conifers. The sky is blue with a few fluffy white clouds.
Bass Harbor Head Light Station


Science and Technology Log

Next week, I will board the 209 ft. NOAA Ship Henry B. Bigelow in Newport, Rhode Island.

“The ship is named after Henry Bryant Bigelow (1879-1967), an oceanographer, zoologist, and marine biologist whose work helped establish oceanography as a scientific discipline.” (NOAA OMAO.)

NOAA Ship Henry B. Bigelow “is a fisheries survey vessel built specifically for NOAA to support the study and monitoring of marine fisheries and marine mammals.” (NOAA Ocean Exploration.) The ship conducts both acoustic and trawl surveys and has a wet lab where scientists can collect data about the different species of fish caught.

While aboard NOAA Ship Henry B. Bigelow, I will have the opportunity to deploy a drifting buoy (also known as a drifter) as part of NOAA’s Adopt-a-Drifter Program. The buoy will collect data such as sea surface temperature, salinity, and ocean currents. This data will then be transmitted hourly to orbiting satellites which my students will be able to monitor.

aerial view of NOAA Ship Henry B. Bigelow underway, as seen from the portside. it's a large white ship with the NOAA logo next to the identifiers NOAA R 225. the surrounding water is so dark it appears black.
Aerial view of NOAA Ship Henry B. Bigelow. Photo credit: NOAA.

Personal Log

Last week, I attended the University of Maine’s RiSE Coastal TRACERS training.

“The University of Maine-based RiSE Center supports middle and high school students in real-world science research projects, including coastal monitoring and tracking the changes in local ocean water properties, as well as engaging in the design and construction of the sensor units used to collect this data.” (UMaine.)

As part of my training, I toured the “Buoy Barn” at the University of Maine Ocean Observing System (UMOOS). Dr. Neal Pettigrew, professor of oceanography, led the tour while explaining how these moored buoys in the Gulf of Maine help collect data and information about ocean temperatures, salinities, dissolved oxygen, wave heights and periods, and current profiles.  “The buoys, designed, fabricated and maintained by Dr. Pettigrew’s team of oceanographers, engineers, computer programmers and research associates, have been transmitting real-time data since 2001.”  Such amazing work is happening at the University of Maine!

Two large buoys in a storage shed. They are wide and round at the bottom, to float in the ocean, and towers of sensors and equipment extend upward from each base. The buoys are painted mostly yellow, with blue bottoms and blue lettering: the left buoy reads NOAA and the right reads UPRM.
Land/Ocean Biogeochemical Observatory (LOBO) Data Buoys
a large buoy in a storage shed (flanked by other buoys and equipment, only partially visible.) It are wide and round at the bottom, to float in the ocean, and towers of sensors and equipment extend upward from the base. The buoy is painted mostly yellow, with blue bottom and blue lettering: the buoy reads NOAA 41052. The word CariCOOS is visible in smaller letters on the tower portion.
Land/Ocean Biogeochemical Observatory (LOBO) Data Buoy
this vessel looks like a small sailboat, one too small to fit people. in fact, the hull is covered completely (no room for seating) and dotted with solar panels. The hull is red, and the sails are white and orange. It's inside a storage shed, and ocean buoys are partially visible behind it.
Navocean
Automated Surface Vessel
ocean monitoring equipment in a storage shed; this glider is shaped a bit like a small airplane (aerodynamic body, wings, tail.) It's stored on a small trailer or cart with wheels, on top of a bench.
Slocum Electric Glider