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post #1 of 5 Old 03-28-2011 Thread Starter
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Through Hull Replacement question

My boat is a 1968 Cal 2-30 and I'm replacing the through hulls. There is one right above the keel that has an impeller knot-mater. It still works, but I'll never use it. So the question is:
Do I yank the whole thing out (and cover the hole) and rely strictly on electronics?
Common sense dictates that if it ain't broke, don't fix it, but I would rather have one less hole.

1968 Cal 2-30
Sandpiper 2
MDR
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post #2 of 5 Old 03-28-2011
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The difference between gps speed over ground value and knotmeter speed through water value lets you know if the current is helping you or hurting you, usefull information. Make sure the fitting and transducer are in good shape and keep on sailing!
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post #3 of 5 Old 03-28-2011
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SVPrairieRose has it right. It looks like your sailing venue includes the California current, so it may be useful to compare your GPS speed with speed through the water, particularly if you cruise to places where the tidal effect is significant (SanDiego?).
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post #4 of 5 Old 03-28-2011
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I wouldn't want to be without my through-the-water boat speed when trimming and steering upwind either.... Always good info to have.

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
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post #5 of 5 Old 03-28-2011
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Quote:
Originally Posted by rbrasi View Post
Common sense dictates that if it ain't broke, don't fix it . . .
. . . If it ain't broke, you're not trying . . .

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