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he author attempts a
ine relief connection |
The art of marlinspike seamanship that includes rope work and storage, knot tying, and line splicing is as important today as it was a century ago. The technology of yesteryear combined with the need to secure video, audio, and network cables necessitates a solid foundation in rope work. The internet has made line work more accessible to those that feel as if they have their hands tied when it comes to cordage. Most knots, splices, and braids can be tied by high strung landlubbers that are ready to invest the time and patience required.
The moorings of the ship are the connection from the terrestrial world to the marine one. They are critically important as the ship can be damaged by hitting the pier and vice versa. Equally important when the ship puts to sea is stowing the lines so the deck remains uncluttered and safe. The next most important lines on the ship are the rope safety stanchions that line the rails of the main deck. In some locations these lines are literally all that separate you from the sea. The connections not only need to hold fast, but need to keep a tension in the line so people can hold onto them while walking on the deck or looking over the side of the ship. Most equipment aboard from ladders, storage containers, and even the computer I am using to compose this blog are secured with line, so when the sea becomes unpredictable the equipment is not damaged as a result.
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Tasha Ewing shows off
her Monkey's fist Earings |
Perhaps the most unique applications of marlinspike seamanship aboard Research Vessel Thompson are the lines used to secure scientific instruments onto their platforms, handles on science equipment, and releases on apparatus that need to be secure on descent to the ocean floor, but then readily manipulated by the Oceaneering ROV Millennium. The crew have been frequently roped into helping create these attachments. The first few days aboard found a good portion of the science crew tying monkey’s fist knots that act as floats that can grabbed by the ROV’s arms for accessibility and retrieval on the ocean floor. Another example is a line relief braid that is used to reinforce cables at their point of attachment to their instruments, so that the connection is not broken by the forces of the deep ocean.
The most challenging application of knot tying was to use “jute” to secure electrical lines to the Endeavor junction box. Jute is a natural vegetable fiber that is used to make burlap. It comes in three braids that need to be separated with painstaking care and then tested to have a tensile strength that is little more than what the average person can pull apart with their hands. Here’s the rub, most strands of jute that are separated easily pull apart upon inspection. The idea is to have the electrical line secure so it can be taken off the junction box one coil at a time.
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| Bow moorings of R/V Thompson |
If you’d care to test your skills with a few of the most common knots that are used aboard, I have a few suggestions: Give the bowline, tautline hitch, two half hitches, and clove hitch a try. Need something more challenging? Attempt a truckers knot. All of these knots are used every day at sea and I am certain you will find them useful on land as well.
by Marty Momson