I was driving Jungle Drum on Sunday.
We did have a Velocitek on board reading SOG and I can verify the top speed of 17.2 knts & that the B&Gs are correctly calibrated for boat speed.
Wind was gusting to 28knts and I guess we were surfing/planning most of the leg. The boat was very stable on the plane and easy to keep on line; I think with a bit more practice and similar conditions that figure will be exceeded quite easily
Can't argue the results - well done on beating the Corby & 105 this weekend, although you did drop points to the Elan 37.
Guess you've got the speedo on dealer calibration though, as in 20 knots tws a Ker 40 has downhill VMG targets of c.16 knots and sails off IRC rating of 1.195ish, similarly, a Farr 30 targets c.12, IRC c 1.090.....either your speedo's overeading, or your IRC assessment is way, way, way under.....
As for the bulb - well, agricultural is probably a complement, but in fairness is in keeping with the design ethos of the rudder and hull, and consistency has to count for something.