RL24, RL28, and RL34 Trailable Yachts
from Rob Legg Yachts

RL Yacht Owner's Discussion Forum

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Replying to:More on the Dreaded Horizontal Stability Factor
I have just received the following correction from Yachting Victoria for the new RRS book (Appendix D part 1) in an emailed newsletter! Quote: " The small change is to the Screening Value (SV) formula in clause D.5.2 and it now becomes: SV = 2.83 x LOA Displacement Instead of: SV = 3.33 x LOA Displacement Following the release of Appendix D in May, it was found that some boats that had proven to be seaworthy in the past would be required to undergo practical RMI testing rather than pass the simpler SV test. The previous SV formula had been based on a formula for rated length used in the past and not on LOA. The revised formula means that more boats will now pass the screen test and not be required to undergo the practical RMI test. Yachting Australia apologises for any inconvenience this may have caused but is confident this amendment will be a welcome outcome for boat owners and for race committees. Please contact Kristi Ruus Yachting Australia Competition Coordinator on (02) 8424 7408 or kristi.ruus@yachting.org.au with any queries." The above correction to the recent YA ammendment to the new rule book still means that most trailer yacht class associations will have to conduct pull down tests if they want their class of trailer yacht to compete in Category 5 Races. The big Queensland Bay to Bay race, the Geelong to Queenscliff and the Marley Point races are all raced under Cat. 5!!! What the hell is going on and who is looking after our interests? Are the state trailer yacht associations not interested? Do the trailer yacht class associations think that if they ignore the problem it will disappear! What is the RL 24 Association doing about this problem? Alastair Russell PS From Appendix D to part 1 A test or calculation is required for: a. Any boat where the LOA exceeds 10 metres and the SV exceeds 10 b. Any boat 10 metres or less LOA and the SV exceeds 14 c. Any boat that carries more than 30% of its ballast internally c. Any boat with a displacement less than 1.5 tonnes