Suzanne Acord: Teamwork Is a Must While at Sea, March 25, 2014

NOAA Teacher at Sea
Suzanne Acord
Aboard NOAA Ship Oscar Elton Sette
March 17 – 28, 2014

Mission: Kona Area Integrated Ecosystems Assessment Project
Geographical area of cruise: Hawaiian Islands
Date: March 25, 2014

Weather Data from the Bridge at 14:00
Wind: 7 knots
Visibility: 10 nautical miles
Weather: Hazy
Depth in fathoms: 577
Depth in feet: 3,462
Temperature: 27.0˚ Celsius

Science and Technology Log

Teamwork

Kona cruise map

2014 Kona IEA Cruise Map. Locate H1 and H2 to determine where our HARPs are retrieved and deployed.

Throughout the past week, it has become obvious that all operations aboard the Sette require team work. Scientific projects and deployments require the assistance of the Bridge, engineers, and heavy equipment operators. This was clear during our recent deployment of our HARP or High-frequency Acoustic Recording Package (see my earlier posts to learn why we use the HARP). Marine Mammal Operations lead, Ali Bayless, leads our morning HARP retrieval and deployment operations. We first prepare to retrieve a HARP that has completed its duty on the floor of the ocean. At least a dozen scientists and crew members attempt to locate it using binoculars. It is spotted soon after it is triggered by our team. Crew members head to the port side of the ship once the HARP at station H2 surfaces. H2 is very close to the Kona Coast. A fresh HARP is deployed from the stern of the ship later in the morning. Both the retrieval and deployment of the HARPs take immaculate positioning skills at the Bridge. Hence, the Bridge and the HARP crew communicate non-stop through radios. The coordinates of the drop are recorded so the new HARP can be retrieved in a year.

A Conversation with Commanding Officer (CO) Koes

A selfie with CO Koes

A selfie with CO Koes

Morale is high and teamwork is strong aboard the Sette. These characteristics are often attributed to excellent leadership. CO Koes’ presence is positive and supportive. CO Koes has served with NOAA for the past thirteen years. She came aboard the Sette January 4, 2013. She is now back in her home state of Hawaii after serving with NOAA in California and Oregon. She is a graduate of Kalani High School in Hawaii and earned a BA in chemical engineering at Arizona State University.

As CO of the Sette, Koes believes it is important to create trust amongst crew members and to delegate rather than to dictate. She provides support and guidance to her crew twenty-four hours a day, seven days a week. She is the CO of all ship operations such as navigation, science operations, deck activities, trawling, and engineering. She is highly visible on board and is genuinely interested in the well-being of her crew and ship. She does not hesitate to start a conversation or pep talk in the mess or on the deck. When asked what she enjoys most about her job, she states that she “likes to see the lights go on in the eyes of junior officers when they learn something new.” Koes goes on to state that her goal as CO is to have fun and make a difference in the lives of her officers and crew.

Personal Log

Ship Life

Bunkmate and scientist, Beth Lumsden, and I during an abandon ship drill on the Texas deck.

Bunkmate and scientist, Beth Lumsden, and I during an abandon ship drill on the Texas deck.

I have found that one can acclimate to life aboard a ship quite quickly if willing to laugh at oneself. The first couple of days on board the Sette were fun, but shaky. We had some rough weather on our way to the Kona Coast from Oahu. I truly felt like I was being rocked to sleep at night. Showering, walking, and standing during the rocking were a challenge and surely gave me stronger legs. Regardless of the weather, we must be sure to completely close all doors. We even lock the bathroom stall doors from the outside so they don’t fly open. The conditions quickly improved once we hit the Kona Coast, but conditions change frequently depending on our location. When up in the flying bridge for Marine Mammal Observation, we can easily observe the change in the wave and wind patterns. It is difficult to spot our dolphins and whales once the water is choppy. It is these changes in the weather and the sea that help me understand the complexity of our oceans.

Meal time on board is tasty and social. Everyone knows when lunchtime is approaching and you are sure to see smiles in the mess. All meals are served buffet style so we are able to choose exactly what we want to eat. We can go back to the buffet line numerous times, but most folks pile their plates pretty high during their first trip through the line. After our meals, we empty our scraps into the slop bucket and then rinse our dishes off in the sink. This gives us the chance to compliment our stewards on the great food. If we would like, we can eat our meals in the TV room, which is next door to the mess. It has a TV, couches, a few computers, a soda machine, and a freezer filled with ice-cream.

Chain of command is important when performing our science operations, when net fishing, when in the engineering room, and even when entering the Bridge. Essentially, if someone tells me to put on a hard hat, I do it with no questions asked. Everyone on board must wear closed toed shoes unless they are in their living quarters. Ear plugs are required on the engineering floor. Safety is key on the decks, in our rooms, in the halls, and especially during operations. I have never felt so safe and well fed!

Dr. Tran is always smiling.

Dr. Tran is always smiling.

“Doc” Tran

Did you know that we have a doctor on board who is on call 24/7? The Sette is fortunate to have “Doc” Tran on board. He is a commander with the United States Public Health Service. Doc Tran has served on the Sette for four years. He is our doctor, our cheerleader, our store manager, and our coach! When not on duty, he can be seen riding an exercise bike on the deck or making healthy smoothies for anyone willing to partake. He also operates the ship store, which sells shirts, treats, hats, and toiletries at very reasonable prices. He truly enjoys his service on the Sette. He loves to travel, enjoys working with diverse groups of people, and appreciates our oceans. He is a perfect match for the Sette and is well respected by the crew.

 

 

Suzanne Acord: Preparing to Embark! March 12, 2014

NOAA Teacher at Sea
Suzanne Acord
(Almost) On board NOAA Ship Oscar Elton Sette
March 17 – 28, 2014

Mission: Kona Area Integrated Ecosystems Assessment Project
Geographical area of cruise: Hawaiian Islands
Date: March 12, 2014

Personal Log

Aloha, from Honolulu, Hawaii! My name is Suzanne Acord. I teach high school social studies with Mid-Pacific Institute in Honolulu, Hawaii. More specifically, I teach Asian Studies, World History, and IB History. I also teach one Pacific Island History course with Chaminade University. In addition to teaching, I advise our Model United Nations delegation and coordinate our school’s History Day efforts.

Prior to teaching in Hawaii, I served as a Peace Corps volunteer in Yap, Micronesia. Two years of living a subsistence lifestyle in Yap helped me to understand our intimate and reciprocal relationship with our earth. Yap State Legislator, Henry Falan, sums up this relationship by stating, “In Micronesia, land is life.” Both man-made and naturally occurring disasters can be felt throughout the Pacific. World War II, El Nino, tsunamis, and nuclear testing are just a few world events that have left their mark on the Pacific Ocean. Their impacts on the reefs, the fish supplies, and the water quality are apparent daily.

Peace Corps hut

My first hut in Yap, Micronesia. I lived here while serving in the Peace Corps.

I applied for the NOAA Teacher at Sea program to gain a better understanding of the human relationship with our oceans. My history students frequently determine how our relationship with the ocean changes as a result of environmental change, political change, economic change, and cultural change. My experiences during this cruise will allow my educational community to consider real world solutions for the environmental challenges we face and will face in the future.

I couldn’t be happier to set sail on NOAA Ship Oscar Elton Sette on March 17, 2014. We will travel from Ford Island (a WWII place of interest) to the Big Island of Hawaii, which is also known as Hawaii Island. The Big Island is the largest of the Hawaiian Islands and is the home of Volcanoes National Park. Most of our time will be spent on the Kona coast of the island.  One of the many goals of the Kona Area Integrated Ecosystems Assessment Project is to gain “a complete understanding of the Kona ecosystem, from the land to the ocean…to provide scientific advice used in making informed decisions in the Kona area.”

Suzanne at desk

Anticipating the adventure in my classroom.
Photo credit: Scot Allen

The thorough NOAA Teacher at Sea training has given me peace of mind. I feel much better prepared for the TAS journey now that I have read the official requirements and the tips from past Teachers at Sea. The videos helped me to visualize the experience. Don Kobayashi, our Chief Scientist, has kept all members of the scientific expedition in the loop throughout the planning process. I was excited to see my name listed on the “science party” document and amused when I learned that my daily shift would span from 3 am to noon daily. I will surely experience amazing sunrises over the Pacific. This will definitely be an intellectually stimulating adventure!

My next blog will be written aboard the Sette. Aloha for now.

Adam Renick, Searching for Cetaceans and Wrapping Up, June 25, 2013

NOAA Teacher at Sea
Adam Renick
Aboard NOAA Ship Oscar Elton Sette
June 12–26, 2013 

Mission: Kona Integrated Ecosystems Assessment http://www.pifsc.noaa.gov/kona_iea/
Geographical area of cruise: The West Coast of the Island of Hawaii
Date: Tuesday, June 25, 2013

Weather Data
Current Air Temperature: 77° F
Sea Surface Temperature: 77° F
Wind Speed: 3 knots

Finding the Cetaceans…
 
In the final days of our research cruise we set out to get an assessment of cetacean activity in the Kona area that we have been studying. In addition to the ongoing active acoustics, CTD and DIDSON sampling, we have added two new tasks to the science team to find as many cetaceans as possible. We have set up a hydrophone, which is a sound recorder that sits in the water and is pulled by the ship, to listen for the clicks, whistles and any other sounds dolphins and whales might make.

For examples of sounds cetaceans make please check out this website. When the sounds from the cetaceans are received the wave frequencies are recorded using some very interesting software that helps us determine the type of marine mammal it is and where it is located. Specifically locating and identifying the cetaceans requires the cooperation of many people and is not necessarily as simple as I am making it sound here.

Melons

The recording of a pod of approximately 150 Melon-Headed Whales. Credit: Ali Bayless

The sounds of Pilot Whales. Credit: Ali Bayless

While the acoustics team and the ship’s crew are listening and seeking out the animals we also assist in the effort by making visual observations from the highest deck of the boat called the “flying bridge”. Here one or two people who are in communication with the science team below use binoculars and “big eyes” to visually find and identify marine mammals.

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Looking through the “big eyes”

Some of my personal observing highlights of this operation include a sperm whale, a pod of approximately 150 melon-headed whales and smaller pods of spinner dolphins, rough-toothed dolphins, rough-toothed dolphin and pilot whales.

SE 13-04 Melon Heads

Visual observations of the Melon-Headed Whales.
Photo: Chad Yoshinaga

Rough-toothed_Dolphins

Rough Toothed Dolphins
Photo: Ali Bayless

Wrapping Up the Journey…
 
I cannot express enough gratitude to the members of the science team and the crew of the Sette for making my NOAA Teacher At Sea experience so rewarding. There are so many elements of this trip that are worth pause, reflection and appreciation. My emotions ranged from excitement just being at sea for 15 days and living a lifestyle that is unique and different than my own, the contemplative awe of the vast and complicated ocean ecosystem and the exhilaration when one of its own breaches the surface to give us a peek at it. In the end, I think my greatest appreciation gained along this journey was learning to slow myself down to the pace of nature in order to better observe and understand it.What’s next for me? NASA Teacher In Space… 2014 here I come!

Just kidding (is that even possible?) Until then I guess I should practice my moon-walking on Kilauea crater until I head back to my amazing wife and life in San Diego. Thanks for reading and, whatever you are doing out there in the world today, make a memory.

Adam Renick, The DIDSON Pilot, June 21, 2013

NOAA Teacher at Sea
Adam Renick
NOAA Ship Oscar Elton Sette
June 12th – June 26th, 2013 

Mission: Kona Integrated Ecosystems Assessment http://www.pifsc.noaa.gov/kona_iea/
Geographical area of cruise: The West Coast of the Island of Hawaii
Date: Friday, June 21, 2013

Current Air Temperature: 75° F
Sea Surface Temperature: 77° F
Wind Speed: 16 knots

Happy Solstice Everybody! Welcome to astronomical summer!

Giacamo Giorli explains the DIDSON deployment process to the team.

Giacomo Giorli explains the DIDSON deployment process to the team.

What is a Didson?

The DIDSON sonar in a protective case.

The DIDSON sonar in a protective case.

We are well into the second week of our cruise and I want to tell you all about a new pilot project that NOAA is working with through the Marine Mammal Research program at the Univ. of Hawaii that is using a DIDSON sonar. A DIDSON (Dual frequency IDentification SONar) is an advanced type of sonar that has many advantages over a traditional sonar for finding fishes and other marine life.

The first advantage of a DIDSON is that it gives us a very highly detailed image of what types of marine life are present in the water. When our shipboard acoustics team “sees” that there is a layer of creatures in the water column it appears as very small dots on a computer screen.

Here you can see the DIDSON going down to record the scattering layer (the very thin line near the finger).

Here you can see the DIDSON going down to record the scattering layer (the very thin line near the finger).

This is great because it tells us the depth and location, but it does not tell us what it is. When we see something of interest, we can deploy the DIDSON to give us an actual “picture” of that creature or even a video of its behavior. The reason I am describing the “imaging” properties of this tool in quotes is that it is not a camera and it does not use light to see at all. Rather, it uses high frequency sound waves to produce an image much like a sonogram gives us a picture of a baby in a mother’s uterus.

Comparison of different types of sonar.

Comparison of different types of sonar.

This leads us to another major advantage of the DIDSON over traditional technologies such as beam sonar or videos. This thing can go very deep into the ocean to explore the life that is there. If you recall back to my previous post you will remember that mesopelagic fish hang out much deeper in the water column during the day than at night. Trawling that deep is challenging and requires more effort and resources than using the DIDSON. If we want to see what is down there we can deploy the DIDSON into the scattering layer and get a sense of the marine life in the deeper parts of the ocean. Also, because it uses sound it can give us data about behaviors that are occurring in the dark regions of the ocean.

Mr. Giorli wishing luck to the DIDSON equipment as it is deployed.

Mr. Giorli wishing luck to the DIDSON equipment as it is deployed.

Giacomo Giorli and others that are leading this project on the cruise are still going through the data they’ve collected with the DIDSON.  So far, they have seen a lot of success and have a identified a few squids – but they won’t tell us more than that until they go back to the lab to fully analyze their data.  “We don’t exactly know what is down there right now, but with emerging technology, one day we will,” says Mr. Giorli. See a video clip of the DIDSON data here.

The ever-useful duct tape makes its debut on this cruise.

The ever-useful duct tape makes its debut on this cruise.

Adam Renick, Getting To Know the Ocean – The Kona Ecosystem, June 16, 2013

NOAA Teacher at Sea
Adam Renick
NOAA Ship Oscar Elton Sette
June 12th – June 26th, 2013 

Mission: Kona Integrated Ecosystems Assessment http://www.pifsc.noaa.gov/kona_iea/
Geographical area of cruise: The West Coast of the Island of Hawaii
Date: Sunday, June 16, 2013

Current Air Temperature: 78° F
Sea Surface Temperature: 79° F
Wind Speed: 20 knots

Personal Log
 

Sunrise in Hawaii

Sunrise in Hawaii

All is well on the Sette! Skies have been clear, waters have been relatively calm and the mood onboard has been positive. With the cooperative work of the scientists, the crew’s expert ship handling and Clem and Jay’s fine cooking it has been a very interesting week for me. For years I have taught about physical oceanography with a focus on what we know, not necessarily how we know it. I had a sense of how things were done in general; using sonar and taking samples, but I never understood the details of how we can target specific locations to study in such a vast ocean to get a picture of it as a whole system. In just a few days aboard this research vessel I have been given a look at how ocean science is conducted and how our knowledge about the expansive oceans is built one piece of thoughtful data at a time. In the last week I have learned how a well-organized research plan is executed and have also learned about some of the difficulties of conducting science at sea as well.

 
Science and Technology Log – Night Trawling
 

The zones of life in the ocean.

The zones of life in the ocean.

One of my nightly tasks is to help a team of scientists conduct trawls of the mesopelagic zone to identify the organisms that live there. The mesopelagic zone (pictured) is also known as the twilight zone because it is where there is a small amount of sunlight that penetrates the water, but not enough for photosynthesis to occur. If you recall from my last blog, the Sette has an active acoustics team that is using active sonar to identify layers of organisms at specific depths in the water column. During the daytime this layer is too deep for our nets to catch them. But at nighttime this layer migrates up towards the surface allowing us catch them with in a net in a process called a trawl. We do two trawls each night. Before each trawl the acoustics team tells the trawl team the depth of the target layer. The deck crew then deploys a fairly large net down to that depth and drags it through the water to scoop up the organisms that we have targeted. Blog4 (1)After about an hour of doing this the net is pulled back up to the ship where all the creatures are collected in a bag called a “cod end”. It may sound fairly simple, but this process requires the coordination of many different people as the scientists need to communicate with the deck operations crew, and the deck crew has to work with the captain to ensure that the very long net line hits the target and does not get tangled or damaged in the process. Keep in mind that this is happening at 1:00am with 20 knot winds and 10 foot waves. It is a wonder to see and be a part of this operation.

Krill...

Krill…

Once we have collected all of the organisms we move on to sorting the catch. We separate the contents of the net into five main categories and then measure the number, mass and volume of each of the types. Perhaps the most commonly abundant of the groups that we classify are mesopelagic fish, which are dark in color and contain photophores to provide them camouflage in the night. Cephalopods (squid) are also quite common along with gelatinous creatures such as jellyfish and crustaceans over 4cm in length, such as shrimp. The final category of interest to us is the shore-fish, which are juvenile fish that will eventually move more towards the land or reefs once they are bigger. The shore-fish are typically the most beautiful looking of the catch.

Shore-fish sorting

Shore-fish sorting

Everything that is left over is then lumped into a general category called miscellaneous, which is mainly composed of krill. Some cool stuff we’ve gotten in the bag that don’t really have their own category have been two cookie-cutter sharks, a seahorse and two remoras.

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Examining a Cookie-Cutter Shark

Shark

Close-Up of Shark

So what does this all have to do with cetaceans? I have yet to mention them in my blogs. By studying the composition of the mesopelagic layer we can better understand the food chain and ecosystem that the whales and dolphins depend on. Next week when we begin actively searching for cetaceans we will be able to better understand their behaviors because we have background data on where their food is, what it is composed of and how it behaves. Hope all is well back on land…

 
Best,
Adam Renick
NOAA Teacher at Sea

Rita Salisbury: Robots and Sound Waves, April 19, 2013

NOAA Teacher at Sea
Rita Salisbury
Aboard NOAA Ship Oscar Elton Sette
April 14–29, 2013

Mission: Hawaii Bottomfish Survey
Geographical Area of Cruise: Hawaiian Islands
Date: April 19 2013 

Weather Data from the Bridge
Partly cloudy, winds ENE 10-15 knots, sunrise 603, sunset 1846
77 degrees F (25 degrees C)
Humidity 85%
Barometer 30.09” (1019.5 mb)
Dewpoint 72 degrees F (22 degrees C)
Heat Indes 78 degrees F (26 degrees C)
Visibility 10 miles

Science and Technology Log

We have been calibrating the acoustic equipment for a few days in order to be ready for our survey of bottomfish. It was a long process, but necessary. Four of us worked on moving a small titanium sphere under the boat by maneuvering it to different positions. A scientist working in the e-lab (electronics lab) used different frequencies from the transducers to locate the sphere and record the results. Graduate students and NOAA scientists worked until 1:00 in the morning to get the job done.

The ROV on it's first deployment

The ROV on it’s first deployment

While we were working on the acoustics, other scientists were working on a test run of the ROV. The currents were very strong when they deployed the ROV but it performed well and was successfully retrieved. Operating it is a lot like the controls to a video game, only the stakes are much higher. 

The AUV was deployed on Wednesday. The first step was to do a rehearsal of the procedures for deploying and retrieving the AUV. Everyone had a job to do and it was made clear who would be doing what and when. While it was obvious that certain people were in charge, they asked that if anyone thought they had a better idea of how to do something, or had a question, to speak up.  At one point, the captain, CO Koes, asked everyone who was not actually part of the procedure to move to one of the side of the deck so she could see who was  actually supposed to be working.

After the walk-through rehearsal, the AUV was lifted off the deck by a large crane and placed into the water off the fantail of the ship. At first it was tethered to the ship, but after awhile it was released and became independent of the ship. The scientists want to be as sure as they can be that the AUV will operate properly before letting it go so they run through a checklist. If everything is working correctly, they release the AUV.

OLYMPUS DIGITAL CAMERA

The AUV being deployed.

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The AUV going solo!

The AUV is pre-programmed for the mission so it is important to know about the underwater geography of an area. The AUV needs to be within 30 to 35 meters of the ocean floor in order to know where it is. Other than that, it follows the pattern that the scientists created. If the AUV doesn’t return to the ship, it’s a big deal. It’s very expensive and difficult to replace. The scientists designed it with that thought in mind.

In addition to the high-tech solutions programmed into the AUV, the scientists also included low-tech ideas into the equipment to retrieve the AUV in case something goes wrong and the AUV is submerged and unretrievable. There is a “drop weight” attached to a strand of zinc. Zinc corrodes quickly in salt water. Through testing the scientists have already determined how thick the zinc strand should be in order to corrode through in a given amount of time at a particular water temperature. The strand that they are using on this cruise is constructed to corrode through in 5 1/2 hours. Once it corrodes, the weight drops off and the AUV rises to the top of the water where it can be seen and picked up. The zinc strand is replaced and another weight is attached. All the weights are the same size and weight so they are interchangeable. Otherwise, the scientists would have to recalibrate the AUV every time they changed weights. I was really impressed to see that the scientists use a combination of high and low tech to make their AUV successful.

Heat-sealing the ground up squid and sardines for bait.

Heat-sealing the ground up squid and sardines for bait.

The scientists on the Oscar Elton Sette use some smaller boats to assist with their research. One thing that I do to help out is make bait for the small boats to use to attract fish. We take frozen squid and sardines out of the freezer a few hours before we need them and put them on a protected place on the deck. After they thaw, we put them in a commercial quality food processor and grind them up into marble-sized chunk. Then we put the chunky bait into plastic bags, seal them, and put them back in the freezer until they can be delivered to the boats that need them.

Personal Log

This ship is amazing! It’s big and packed with the scientific equipment. The “wet lab” has become the acoustics lab for this trip and the e-lab is above that. The mess is open 24 hours for snacks, (as long as you clean up after yourself), and serves three meals a day. The cooks are really talented and are always providing fresh new ways of serving something. Fortunately, there’s a gym a couple of decks beneath mine!

There’s a movie room, a laundry, a tv room with books and computers, and a ship’s store. There’s even a full-time medical officer on board. My stateroom is set up well. There are 6 spacious bunks, drawers under the bottom ones and lockers for everyone, built-in desks with ethernet access, and a large bathroom. Since everyone is on a slightly different schedule we do our best to be quiet and to keep the lights low.

Uli Uli Manu taking a break on my bunk.

Uli Uli Manu taking a break on my bunk.

 On Tuesday, we had emergency drills. Everyone has a specific place that have to go to when the alarms sound. If it’s a fire alarm or a man-overboard drill, I have to go to the Texas Deck. If it’s an abandon ship drill, I go to the boat deck and put on my orange gumby suit. That was a little tricky and very hot, but I’m glad they let us practice it.

One thing I’ve noticed on the ship is how everyone has a job to do, but they are always ready to pitch in and help someone else. Meals are really interesting. The mess is small and has several tables set up with 4 chairs at each table. People sit with different people all the time. It doesn’t seem to matter who is an officer, a crew member, or a scientist. Everyone sits with everyone else.

 The captain gave me a tour of the bridge on Tuesday. It was late and we ran out of time, so she has invited me to come back up and finish the tour

The Oscar Elton Sette as seen from a small boat off the coast of Maui.

The Oscar Elton Sette as seen from a small boat off the coast of Maui.

soon. I was impressed by the number of back-up plans in place. There didn’t seem to be one piece of equipment that didn’t have another piece doing the same job in a slightly different way. This allows the ship to continue working properly on the chance that something stops working. The bridge is the control center of the ship and has alarms and notifications for anything that might crop up–low fresh water levels, smoke, fire, and anything else you can think of.

Did You Know?

Sound is vibration transmitted through a solid, liquid, or gas. The speed of the vibrations, or how quickly they cycle, determines the frequency. Frequency is measured in cycles per second, or hertz (Hz). Humans can hear certain frequencies, while bats and dogs can hear others. Whales and dolphins hear even more frequencies.

The sound waves we are using on the Oscar Elton Sette will bounce off the fish and reflect back to the ship, allowing the scientists to locate the fish and determine their shape, size, and movement.

 

Animals I Have Seen

Whale fluke off Maui

Whale fluke off Maui

Seen off the coasts of Maui, Molokai, and Lanai:

Needlefish
I thought they were barracuda at first, but someone explained the difference to me
Humpback Whales
Dolphins–too far away to identify the species

Rita Salisbury: First Day at Sea, April 15, 2013

NOAA Teacher at Sea
Rita Salisbury
Aboard NOAA Ship Oscar Elton Sette
April 14–29, 2013
 

Mission: Hawaii Bottomfish Survey
Geographical Area of Cruise: Hawaiian Islands
Date: April 15 2012

Weather Data from the Bridge
77°F/25°C
Humidity 74%
Wind Speed Calm
Barometer 30.00 in (1015.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index 79°F (26°C)

Science and Technology Log

NOAA ship Oscar Elton Sette, known as Sette,  is a large ship, by my standards. It’s 224 feet long, which is more than ⅔ of the length of a football field. It is one of the ships in NOAA’s fleet of oceanographic vessels and like their other vessels, it supports NOAA’s mission to protect and manage the use of ocean resources through ecosystem-based management.

On this cruise, we will be surveying fish populations by deploying a Remotely Operated Vehicle (ROV) and an Autonomous Underwater Vehicle (AUV) to gather information. The ROV is a small, unmanned submersible that is controlled from the Sette and attached by a cable. The AUV is also an unmanned submersible but its path is pre-programmed before it is deployed. Additionally, we will be using acoustics, or sound, to locate, identify, and estimate populations of fish. I met some of the scientists last night who are working with the submersibles and the acoustics. I think this might be one of those times that being good at video games could pay off!

The goal of the Hawaii Bottomfish Survey is to gain more information about the fish populations in the ocean around Hawaii. The survey will help scientists determine the effects of fishing and other factors on the overall health of different fish populations. By gathering information by non-lethal methods NOAA scientists are adding to their knowledge base without further reducing the fish population.

Personal Log

Yesterday, I met the Chief Scientist, Donald Kobayashi, PhD,  for the first time. Dr. Kobayashi is the man in charge of the scientific portion of our Hawaii Bottomfish Survey aboard the  Sette. Dr. Kobayashi took me to Ford Island so I could board the Sette prior to today’s workday getting ready for the survey.

I boarded the Sette and met the boatswain (pronounced bosun) and some of the science party. I also moved into my berth, or stateroom. It’s called the bunkhouse and has six bunks in it. I’ll be sharing it with four other scientists while we are out to sea. It’s important to be able to get along with other people and to be flexible when you are on a ship, just like it is in other situations. But on a ship, where you are in a confined space, it’s even more important to understand the hierarchy of the ship–the officers, the crew, and the science party–and the protocol (the proper way of doing things) so you don’t get in  someone’s way or make someone’s job more difficult. Knowing who is in charge, what the roles are, and the expectations for everyone will help make my adventure a success.

 

Did You Know?

The scientists can tell what type of fish they are tracking and how many of them there are by using sound waves? The scientist sends out a sound signal, or ping, from a transducer, an underwater device that emits sound waves. The Sette has several transducers to accomplish this. The density of the fish’s swim bladder is different than the rest of the fish so the sound, or echo, that bounces back from the fish to the ship can be recorded and interpreted by the scientists. They can tell what type of fish they are tracking, and how many of them there are. Dr. Kobayashi says the scientists can back up their interpretation by photography.

 

Teacher at Sea Rita Salisbury in front of the Oscar Elton Sette

Teacher at Sea Rita Salisbury in front of the Oscar Elton Sette