Monday, July 16, 2012

Hang Em' High

 I always liked Clint....

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How high does a tender need to be above the water? Surely this depends on the waters sailed, how far it extends behind the boat, and the motion of the boat. It depends on how well secured the tender is to the davits, in case it does take some minor hits.

Often, I see towering, high davits, with tenders swinging far below them. Sometimes it's coastal convenience; they hoist her up when off-shore. Too often, the tackle or attachment bridle were poorly conceived, pointlessly consuming critical space between the tender and the davits. Hoisting bridles waste space and are thus, well... dumb.

In my case, the tender is nestled between the hulls, only extending a bit beyond the sterns. This is typical on cats and makes carrying a tender safely easier. I've also taken steps to shorten the lifting tackle and added a bow spreader bar, such that the tackle is contained almost entirely within the tender, thus consuming no lift space.

An so I can hang her high without towering davits. Triced up, with cris-crossing lines underneath, she snugs up tight in the gap between transoms with no need to remove the engine or hoist her up into the wind. The aft edge is about 4 feet off the water, and top edge just above the deck, convenient for loading.

Very simple.

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The spreader bar is made from 1-inch x 1/8-inch aluminum square tube that clips the tender floor and D-rings on both tubes, and is clipped to a lifting tackle only 8 inches above the tender floor; you can't just clip the floor of a sport boat, because if the tubes go flat the floor comes out. And tricing lines, of course.

Friday the 13th

I'm as non-superstitious as they come. But in retrospect, if was funny.

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  • My car was rear ended at 40 MPH on the interstate, driving from Wilmington to Baltimore. No damage. The only thing that saved it was that I heard his brakes and gassed it a bit. Just a 25 year old kid following a bit too close. and traffic that slowed down.
  • Got an engine lift line under the cavitation plate. It did require a swim, but fortunately, did not wrap in the prop. I had recently replaced the lift rope and left just a hair too much slack.
  • Swam with a jellyfish in the process. Fortunately I've got thick skin and they don't bother me much.
  • Threw my new camera (very nice) in the Chesapeake. Rather, I think I left it on the deck and it slid off. Of course, it did still have the not-yet-downloaded images for my next article on it....
  • Head fan died.
  • Port engine died. As near as I can diagnoses the coil has fried, but either way, I decide to replace both with new engines. I'm pretty fair with engines, but I ready for something reliable. Unfortunately, they don't just jump in the boat, none of the local contractors will install them while floating, so that means I get to do it, and I don't feel like it.
All in one day.