Posts Tagged ‘vessel’

Salinity Processes in the Upper Ocean Regional Study (SPURS): The Bridge Of The Knorr

October 3rd, 2012 by Maria-Jose Viñas

By Eric Lindstrom

The bridge of the Research Vessel Knorr. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution.)

Almost everyone can imagine the bridge of a ship – from the movies, a tour of a ship, or maybe you are the master of your own vessel. It is the place where control of all ship operations is commanded. On the bridge of the Knorr, an officer and a seaman are always present and in full control of the vessel, for the safety of all aboard and effectiveness of the ship as a research platform. It’s amazing what they can do and the various skills that are required to command a research vessel.

The bridge and chart room house all the ways and means needed to safely navigate Knorr, maintain her stability, maneuver her on station, and to communicate with anyone as necessary. Like the dashboard of a (sophisticated) car, they have a display of key engineering functions and to operate the ship in both manual (i.e., you driving) and autopilot (car cruise control) modes.

One key function of the master that you may not know about is to complete calculations assessing the stability of the ship and to ballast her correctly as fuel is consumed or heavy scientific gear is deployed. Seawater ballast tanks are available to compensate for changing conditions (Knorr uses between 1,800 and 3,800 gallons of fuel per day).

There is an overarching sense of situational awareness that permeates life on the bridge of any research vessel. The captain and the mates are always alert of changing conditions like weather, location, time, ship traffic, and science plans.  With the rhythm of the ship, they are also keenly attuned to watch changes, meals, rest periods, and fresh coffee brewing. Also, there is all the important watch for fish. The chief engineer must be informed 24/7 of any sighting.  We all need our protein…

That leaves the oceanographers to focus on the science bits – like what the tiny variations of salinity are in the top 3,000 feet of the ocean! That’s sweet. The bridge looks after us, we look after the ocean, and everyone is, well… working. Not much else to do out here.

Knorr has amazing capability to stay on station. In gentle sea conditions, it’s quite possible to stay on location to within a few feet. The officer on watch can set the ship to keep position, so their attention can be shifted to observing deck operations further aft on the ship.

The track of the Knorr while on station. The orange circles have radii of 4 feet and 8 feet.

The view from the starboard bridge station aft.

Captain Adam Seamans has been a Master of Knorr since 2008. He started with Whoods Hole Oceanographic Institution (WHOI) as an Able Seaman in 2000, where one of his first duties was to clean a science cabin after a head overflowed. My, how times have changed! Now he commands the 22-member crew of Knorr and navigates her to all corners of the globe. Maybe he still has to deal with a lot of crumby jobs, but they are mostly of the cleaner variety!

Captain Adam Seamans holding the Knorr’s heading box, which contains three wooden blocks with ten digits inscribed in each. One can set the heading of the ship 0-360 degrees and place this in front of the seaman steering the ship’s course. For the photo, the heading is set at 279 – the length of Knorr in feet.

The Knorr has enormous capability for communication – via satellite phone or internet or radio. In close quarters with foreign vessels, Knorr can communicate the old-fashioned way via flags. Sequences of brightly colored flags have universal meanings to mariners.

The Knorr’s signal flags box.

Finally, I thought I would call your attention to training. All the officers aboard Knorr have great experience and through my decades of oceanography, I have found maritime officers always passing their knowledge and experience forward to others. Teaching and sharing, honestly, what a great concept! It makes for safer seas.

On this voyage we have a learner, a cadet named Anna, from Sweden. She is just 18 and approached a WHOI captain about being a cadet aboard one of their vessels. Sometimes you need to be careful what you wish for! Anna has been working all the jobs on the ship for our expedition. Just today, she was driving a winch by herself for the first time, looking happy and proud! Her initiative and hard-working nature are an example for all of us. Sometimes the teachers become the students… Anna, Bravo Zulu!

Cadet Anna drives the CTD winch.

Salinity Processes in the Upper Ocean Regional Study (SPURS): Engineering of R/V Knorr

September 25th, 2012 by Maria-Jose Viñas

By Eric Lindstrom

The proud R/V Knorr engineering staff in the ship’s control room.

The Research Vessel Knorr is a fantastically capable oceanographic research vessel. She has traveled over 2 million miles and explored all the major oceans in her around 40 years of service.

As a visiting oceanography research crew, we have our space on the ship, for which we have free run. We are mostly in the main labs, on deck, or in the mess (getting fed very well indeed!) Much of the ship is off-limits to personnel other than the crew. I asked for a tour so I could give you a quick view of some “hidden” portions of the ship that make everything work. The daily routine is for the scientists to request that the ship, with her propulsion, station-keeping, cranes, winches, and capstans, to go here, stop there, stay still, lift this, pick up that… and so on, with only vague appreciation of the engineering feats behind these daily miracles.

I was privileged to get a tour of Knorr’s engineering space from the Chief Engineer Steve Walsh. He has been with Woods Hole Oceanographic Institution and aboard the Knorr for many years and participated in the vessel’s complete refit in 1991.

In 1991, the ship was basically cut in two pieces and 34 feet were added to her mid-section. The new engine room was placed in the new section and the space freed up in the after section (the old engine room) is now used as a workshop, welding room, and scientific cargo space.

Knorr’s machine and welding shop.

Knorr still has the old engine order telegraph connected to the bridge.

At the noisy heart of the ship are the engines (3500 Series Caterpillar). These run the four generators that supply 600V energy for all the ship’s electrical needs (which are many). The voltage is stepped down for various different purposes to 480V, 220V, and 120V (like in your house). The generators drive electric motors for primary propulsion, thrusters, and supply power for air conditioning, refrigeration, cranes, winches, lighting, computing, navigation and the coffee machine. According to Steve the most critical elements by far are the air conditioning and the coffee machine.  OK, he’s half-joking…but I know he is serious about the coffee machine!

One of the electric motors for propulsion.

Upper deck crane on R/V Knorr.

It seems to me like the Knorr is, in some ways, like my all-electric home back in Maryland. When the power goes out, it’s a hollow, dark, cold shell of a place. Except on Knorr, we have the power company living in the basement using diesel engines to run the generators to keep our lights on. And unlike my house, the Knorr can also get up and go wherever oceanography takes her and use a crane to pick up the garage and car (or 10,000-lb mooring anchors) to go along for the trip.  Knorr has all the comforts of home, work, and play for our 33 days at sea. They are all in one awesome package. All powered by home-grown, engineer-maintained, electricity.

Coffee anyone?

Knorr Chief Engineer Steve Walsh enjoys a cup of coffee.

Notes from the Field