Quote:
Originally Posted by MicHughV
Plus, I've been told, and whether this is true or not I don't know, but that there are " sea mounts" in the area, some known, others not, which may also cause unusually confused seas.
If you think about it, Bermuda is a small isolated spot of land in the middle of nowhere.
A sea mount that broke thru' the surface at some time ago ? Pure conjecture on my part, but could there be other similar places that are still below the surface.
The Mona Passage between the Dominican Republic and Puerto Rico, have the so-called " hour glass shoals" a similar situation, known to produce very confused seas at times.
I'm certainly intrigued about the rough weather phenomena often experienced either coming or going to Bermuda.
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I am pretty certain that any sea mount tall enough to impact surface conditions would have been found long ago. It is a pretty busy part of the ocean. You can get crap conditions pretty much anywhere. Mona
Passage is different. It is relatively shallow to start with.
First time I went to Bermuda in early '80s I brought a thermometer with me. When I thought I was getting close to the
Gulf Stream I pumped some sea
water into
head sink and checked the temperature every hour or so. We entered the Stream at night and didn't feel temp difference on
deck and couldn't see the sea surface, but thermometer did the trick. Helped with nav since this was pre-GPS and I was using DR and celestial when I could get a shot.
Used temperature
navigation years later sailing westward along the coast of
South Africa. The Agulhas
Current flows west and if you are in it you can pick up at least 2-3 knots. That
boat had a temperature
sensor built into the log (or
depth sounder, can' remember which). We would leave a port like Durban and go out several miles until the temperature of the water rose dramatically, Then we turned right and tried to stay in the warm water. We would creep north a bit to minimize distance but if the temp of the water dropped we would edge south to get back on the conveyor. We left one harbour (Port Elizabeth?) with a much faster boat. They stayed a mile or so
offshore and we went out 10 or so and arrived at the next stop more than an hour or so before them so if you can use currents it is great. Can be tricky with meanders.