Motored out to baseline boatspeed after this summer's racing. Added 5.02 gallons of diesel with Biobor JF Diesel and Star Tron SEF Diesel . Breeze blowing about 6kts blowing down the Severn.
Motored at 2,800rpm to 1"SC", G"9", R"6", G"9", R"6", G"9", and 1"SC".
06:44 (vs 06:24 on 2026-04-24) G"1SC" to G"9", 0.62nm, yields 5.5 knots
02:58 and 02:57 (vs 03:00 on 2026-04-24) G"9" to R"6", 0.29nm, yields 5.87 and 5.90 knots
03:25 and 03:20 (vs 03:01 on 2026-04-24) R"6" to G"9", 0.29nm, yields 5.09 and 5.22 knots
06:31 (vs 06:31 on 2026-04-24) G"9" to G"1SC", 0.62nm, yields 5.7 knots
5.5 average boat speed based upon G"9" to R"6" downstream times compared to R"6" to G"9" upstream times show the effects of both breeze of some 6kts down the Severn and possible current. Slack was predicted at 12:15. 5.5kts is close to the 5.6kts average between G"9" to G"1SC". Looks like we have lost 0.3kts due to fouling of the hull and possible barnacles on the propeller.
GPX formatted track . Distance: 3.79nm, average speed: 5.4kts, duration: 0:42