My reports of speed over ground (SOG) and speed through the water (STW) surprised a couple of my friends in the marina. In other words they were highly skeptical and we arranged to do some 'calibration' with Steve on Red Snapper.
As I had a bit more work to do on Aphrodite to do, there seems to be a lot of that at the moment. Steve headed out for a few hours sailing before meeting up at the Eastern Entrance of Plymouth Sound around high water when there would be little movement in tide and we could check speeds with each other.
As I had a bit more work to do on Aphrodite to do, there seems to be a lot of that at the moment. Steve headed out for a few hours sailing before meeting up at the Eastern Entrance of Plymouth Sound around high water when there would be little movement in tide and we could check speeds with each other.
I motored out about 1230 UTC and watched HMS Scott, one of the Royal Navy's survey ships depart the sound, and just before 1330 Steve came over and tests commenced.
Waiting for Steve to conduct trials. Credit Steve Roffe
Lining the two boats up we headed off under engine, giving us more control over speed, on the same heading.
Above the sound of two engines we failed to hear each other and resorted to calling each other on the mobile phone, calling out the speeds we were displaying. Much to everybody else's surprise they were almost identical. One more check in the box on boat preparation before heading to Kirkwall.
Tests completed Steve headed west to Cawsands and I turned back to King Point.
Steve on Red Snapper
Crew: Sandy Garrity
Trip Stats: Distance: 7.8 nm, Average speed: 4.00 knots, Maximum speed: 6.00 knots, Under way: 2 h 00 m, Sailing hours: 0 h 00 m, Engine hours: 2 h 00 m.
Weather: Issued by the Met Office at 01:01 (UTC+1) on Fri 4 Jun 2021
Lyme Regis to Lands End including the Isles of Scilly
24 hour forecast: Variable 2 to 4, becoming southwest 3 to 5 for a time later. Mainly moderate in far west, otherwise smooth or slight. Fair. Good.
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