Interesting sea story from the SSCA board,
A True Wild Windlass Tale
Sat Sep 22, 2007 10:55 pm
On a recent trip back from Maine to the Chesapeake BORN FREE experienced a rather harrowing event. We'd come to anchor just before midnight in 11' of water in the Delaware River, just across from the entrance to the C&D Canal, having had an enjoyable but boisterious sail down the Jersey coast and up the Delaware Bay.
I lowered the 45lb CQR and about 60' of 3/8" chain using the remote windlass switch in the cockpit, which controls the Lewmar Concept 2 windlass on the foredeck. After setting the anchor, I shut down the engine and went below to have a nightcap and scribble in the log before turning in for the night. My crew promptly hit the sack and drifted off into slumberland. The boat lay quietly to anchor. Below, only the red interior cabin lights and the nav table lights were lit as I reflected on the day's sail.
Suddenly, a loud motor noise erupted from up forward with the clanking of chain. It took a few seconds for me to realize that the windlass had decided --- completely on its own accord --- to begin cranking away. I raced up to the forward cabin and hit the breaker, and all was silent again.
It is my usual practice to pop the windlass breaker when I'm through with the windlass, but I hadn't done so yet as I intended to check the anchor rode one more time before turning in for the night.
Needless to say, I was apalled at the thought that the windlass might decide on its own to activate. Imagine if it just decided to pull up the anchor when one was ashore!
Investigating the cause next morning, I found that:
1. the windlass had been turning in the DOWN direction, i.e., paying out more chain; and
2. the cause was a shorted deck switch on the foredeck.
The deck switches are Lewmars which I've never liked very much....plastic rings and covers and a white rubberized covering over a pretty flimsy switch, with two small wires extending underneath. These switches simply activate relays, so don't carry much current. The wires leading from the down switch were actually cracked where they pass through a small hole in the deck; this was the cause of the short circuit which activated the relay which activated the windlass.
Moral: Follow the established practice of turning off the windlass breaker when it's not in use. Beware of flimsy deck switches.
Bill