Jacquelyn Hams, August 10, 2006

NOAA Teacher at Sea
Jacquelyn Hams
Onboard NOAA Ship Rainier
July 24 – August 11, 2006

Mission: Hydrographic Survey
Geographical Area: Shumagin Islands, Alaska
Date: August 10, 2006

NOAA Teacher at Sea, Jacquelyn Hams, and ENS Olivia Hauser on board NOAA ship RAINIER
NOAA Teacher at Sea, Jacquelyn Hams, and ENS Olivia Hauser on board NOAA ship RAINIER

Personal Log 

Our sail is coming to an end and I can truly say that I will take what I learned back to the classroom.  The navigation part of the Oceanography class I teach will be based on skills I learned from navigators aboard the RAINIER. My thanks go to ENS Sam Greenaway, RAINIER Navigation Officer who began answering questions and helping me the first day at sea.  I would also like to extend special thanks to ENS Nathan Eldridge, RAINIER Junior Officer, for his assistance in plotting courses and letting me use his personal navigation instruments. A note to my students: Do not attempt to contact these officers for assistance.  They are probably busy at sea again!

On this cruise, I gained knowledge from unsuspected sources which is always a sign of a good educational experience. Umeko Foster, a Cal Maritime Intern aboard the RAINIER, taught me to not just to use a sextant, but how to read the degrees and minutes properly! Matt Boles took the time to make sure that I had a portion of a chart that could be used in the classroom as a teaching tool. Matt’s video interview will be added to this website in the future.

A lot of people work hard to make sure the ship functions properly. The cooks, survey technicians, engineering crew, and deck crew knew my name and made me feel at home. Many of them have been interviewed and videotaped in my logs.  ENS Olivia Hauser, RAINIER Junior Officer, allowed me to room with her for this leg of the cruise.  I can’t say enough good things about her personality and adaptability.  There is a good reason that she is Morale Officer aboard the RAINIER.

So here is my Top 10 List of things to know about the NOAA Ship RAINIER.

Number 10:  You can always find someone to eat ice cream with – even in the middle of the night.

Number 9:  If someone on the ship says he or she caught a fish “this big” believe them.  I have pictures.

Number 8:  You have to be a seasoned crewmember to understand what is being said over the ship’s PA system.

Number 7:  Mandatory drills seem to occur following afternoon breaks.  Afternoon breaks always include yummy treats prepared by the cooking staff.  Coincidence – I think not!

Number 6:  If your room is opposite the fan room, beware.  Someone checks it every hour and during the night it sounds like the door to your room is opening and closing and then you hear the footsteps walking down the hall.  It’s really creepy until you get used to it!

Number 5:  If the PA system goes off twice a day, and you hear a loud groan or grunt into the microphone, the Ship’s Store is open.

Number 4:  Never get instructions in tying knots from more than one person on the ship.

Number 3:  Always get to dinner early if you want pie or cake.

Number 2:  If you hear bells, are told to report to the fantail or get in a survey boat, grab a float coat. Almost everything you do on the RAINIER requires wearing a float coat.

Number 1:  This is the number one thing I learned aboard the RAINIER, about ships and ocean voyages in general, that will stay with me forever.  It is really difficult to spot a person in the water – even with binoculars on the bridge.  I vow to wear bright colors and carry a loud horn when sailing in the future.

My Top 10 list contains a little inside humor, but I am very serious in thanking the NOAA Teacher at Sea Program for selecting me, and the crew of the RAINIER for hosting my cruise.

Jacquelyn Hams, August 9, 2006

NOAA Teacher at Sea
Jacquelyn Hams
Onboard NOAA Ship Rainier
July 24 – August 11, 2006

Mission: Hydrographic Survey
Geographical Area: Shumagin Islands, Alaska
Date: August 9, 2006

ENS Meghan McGovern on left, and ENS Olivia Hauser on right, RAINIER Junior Officers, looking at unmarked buoy sighted by officers on bridge of the RAINIER
ENS Meghan McGovern and ENS Olivia Hauser, Jr Officers, looking at unmarked buoy sighted on the bridge

Weather 
Weather: Foggy, cloudy
Visibility: 1.5 nm
Wind direction: 130
Wind speed: 6 knots
Swell Waves direction: 260
Swell height: 1-2 ft
Seawater temperature: 11.7 degrees C
Sea level pressure: 1014,9 mb
Temperature dry bulb: 12.8 degrees C
Temperature wet bulb: 12.2 degrees C

Personal Log 

I continue to work on activities that can be incorporated into my classes.  The RAINIER is underway to Seward, Alaska. There is some excitement on the bridge after lunch, when an unmarked buoy is sighted on the port side of the ship. Several officers come to the bridge to observe and the buoy is marked on the chart.  As it turns out, this is not a “find” and was updated on the Notice to Mariners put out by NOAA.

After dinner, fog moves in and the RAINIER sounds the fog horn.  As a sailor, I don’t like fog. I am comforted by the fact that I am aboard a large ship with good radar system to detect approaching ships. The fog begins to lift a little and the last day of the cruise, like the first day, is marked by seeing humpback whales.

If this had truly been a “find”, the buoy would have been penciled in and added by NOAA.
If this had truly been a “find”, the buoy would have been penciled in and added by NOAA.

Jacquelyn Hams, August 8, 2006

NOAA Teacher at Sea
Jacquelyn Hams
Onboard NOAA Ship Rainier
July 24 – August 11, 2006

Mission: Hydrographic Survey
Geographical Area: Shumagin Islands, Alaska
Date: August 8, 2006

Weather
Cloudy Visibility: 6 nm
Wind direction: Light
Wind speed: AIRS
Wave direction: 200
Swell height: 2-3ft.
Seawater temperature: 8.9 degrees C
Sea level pressure: 1018.0 mb
Temperature dry bulb: 12.2 degrees C
Temperature wet bulb: 12.2 degrees C

Personal Log

We are anchored in East Bight and I continue to work on lesson plans. We are scheduled to get underway today for Seward. I am excited because I can spend two days in Seward seeing glaciers and fjords. Although, the weather has changed and it is cloudy and overcast, there is an up side to the weather. Geologic features that are often obscure when the sun is shining show up when the weather is overcast and more contrast is provided. I take the opportunity to showcase another basic geologic feature that is well exposed.

Here is a scenic view of part of the Shumagin Islands.  The Haystacks formation is in the center of the photograph.
A scenic view of part of the Shumagin Islands and the Haystacks formation
This is a type of drainage pattern is known as radial.  The drainage originates from a central point and occurs on elevated features such as volcanoes.
This is a type of drainage pattern is known as radial. The drainage originates from a central point and occurs on elevated features such as volcanoes.

Jacquelyn Hams, August 7, 2006

NOAA Teacher at Sea
Jacquelyn Hams
Onboard NOAA Ship Rainier
July 24 – August 11, 2006

Mission: Hydrographic Survey
Geographical Area: Shumagin Islands, Alaska
Date: August 7, 2006

TAS Jacquelyn Hams using a sextant
TAS Jacquelyn Hams using a sextant

Weather
Clear Visibility: 10 nm
Wind direction: 290
Wind speed: 6 knots
Seawater temperature: 10.6 degrees C
Sea level pressure: 1020.5 mb
Temperature dry bulb: 15.6 degrees C
Temperature wet bulb: 12.8 degrees C

Personal Log 

We are anchored in East Bight and I continue to work on lesson plans.  It is a beautiful clear day with many great photo opportunities.  I take advantage of the expertise of Intern Umeko Foster, who gives me a crash course in using the sextant.  I reluctantly admit to owning a sextant for many years and not using it to navigate. Umeko is an excellent teacher and for the first time I am able successfully move the sun to the correct position on the horizon! As a bonus, Umeko demonstrates the correct way to read degrees and minutes.  After dinner, Able Seaman Leslie Abramson drives the liberty boat to and from the beach so crew members can enjoy a little r and r. I ask Leslie to take me on a cruise to a nearby outcrop of rocks with many geologic structures.

Geologic structures are everywhere in this outcrop.  Save this picture to your desktop and enlarge it.  How many faults, dikes, sills, and folds do see?
Geologic structures are everywhere in this outcrop. Save this picture to your desktop and enlarge it. How many faults, dikes, sills, and folds do see?

Jacquelyn Hams, August 6, 2006

NOAA Teacher at Sea
Jacquelyn Hams
Onboard NOAA Ship Rainier
July 24 – August 11, 2006

Mission: Hydrographic Survey
Geographical Area: Shumagin Islands, Alaska
Date: August 6, 2006

TAS Jacquelyn Hams uses a lead line to determine depth during a shoreline survey
TAS Jacquelyn Hams uses a lead line to determine depth during a shoreline survey

Weather
Cloudy Visibility: 10 nm
Wind direction: Light
Wind speed: AIRS
Swell Waves direction: 350
Swell height: 0-1
Seawater temperature: 10.0 degrees C
Sea level pressure: 1018.5 mb
Temperature dry bulb: 15.0 degrees C
Temperature wet bulb: 12.2 degrees C

Science and Technology Log 

Today I go out on a small boat with Jim Jacobson, Chief Survey Technician, ENS Megan McGovern, RAINIER Junior Officer, Erin Campbell, Survey Technician, and Corey Muzzy, Seaman Surveyor and Coxswain to conduct a shoreline survey in Porpoise Harbor.  The objective of the shoreline survey is to verify some points which were identified by LIDAR (Airborne laser mapping) which may or may not be rocks along the shoreline. LIDAR is an emerging remote sensing technology that integrates the following three subsystems in to a single instrument mounted in a small airplane to rapidly produce accurate maps of the terrain beneath the flight path of the aircraft.

  • LIDAR (LIght Detection And Ranging) is similar to radar or sonar in that it transmits laser pulses to a target and records the time it takes for the pulse to return to the sensor receiver
  • Fixed reference systems
  • Global positioning satellite system (GPS).
Bathymetric chart reflecting points for investigation during shoreline survey
Bathymetric chart reflecting points for investigation during shoreline survey

LIDAR utilizes a pulsed laser rangefinder mounted in the aircraft.  While most LIDAR systems are designed to measure land elevations (“topographic LIDAR”), the technology can also measure water depths if designed with a light wavelength which will pass through water (“bathymetric LIDAR”).  Bathymetric LIDAR accurately measures the travel time for both the laser return from the sea surface and the return from the seabed.   If the speed of light is known and one corrects for angle, scattering, absorption at the water surface and other biases, the distance to the sea surface and seabed can be computed from these times.  The difference between these distances is the water depth.  In general, bathymetric LIDAR is less accurate and lower resolution than the multibeam sonar systems on RAINIER’s launches, but it can be much faster and safer in some areas.

This is a picture of a sonar image taken on the boat during shoreline survey. The spike on the image represents a rock.
This is a picture of a sonar image taken on the boat. The spike on the image represents a rock.

We have several LIDAR points to verify. RAINIER has been asked to investigate these points because they are around kelp which LIDAR cannot penetrate.  The boat is equipped with vertical beam echo sounders so that the bottom depth is known.  Once the boat reaches the point of investigation, the coxswain drives a star pattern around the point to make sure that all sides of the potential obstacle have been covered.  Lead lines are used to confirm depths close to the shoreline.

The presence of a rock is indicated by the peak in the sonar image on the left.  Depth of the recorder is 32.4 feet. We are able to survey all but three of our points until we have engine problems after crossing on the edge of a thick patch of kelp. Unfortunately, the engine will not start and we have to call for a tow. On the way back to the ship, I have yet another photo opportunity for some geology pictures.  Nagai Island lies within a major fault zone of the Aleutian Islands so many of the rocks are folded and uplifted into spectacular structures. The beds pictured in the photograph below were deposited according to the Principle of Original Horizontality; therefore they should be stacked on top of each other in a horizontal position. Look at them now!

ENS Megan McGovern, RAINIER Junior Office and Leslie Abramson, Able Seaman.
ENS Megan McGovern, RAINIER Junior Office and Leslie Abramson, Able Seaman.
Imagine the stress that tilted these beds to the current position.
Imagine the stress that tilted these beds to the current position.