jib boom counterweight

Discuss the IOM class rules and interpretations

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YNESTA Joseph
Posts: 8
Joined: 08 Jun 2018, 10:03
Sail number: FRA 281
Club: 13008 La CIOTAT
Design: BRITTPOP

jib boom counterweight

Post by YNESTA Joseph » 18 Apr 2021, 14:06

Hello ,
I don't know if the subject has already been treated, but as a French measurer, I would like to know in which category between the jib boom counterweights, corrector weight or fittings?
This question in order to know if these counterweights could be at a density higher than that of lead?

Thanks a lot for your answers .

Joseph

YNESTA Joseph
Posts: 8
Joined: 08 Jun 2018, 10:03
Sail number: FRA 281
Club: 13008 La CIOTAT
Design: BRITTPOP

Re: jib boom counterweight

Post by YNESTA Joseph » 18 Apr 2021, 16:14

I apologize for my question but while reading and rereading, rereading my eyes finally stopped on F.4.4. (B) (3) thank you

Bruce Andersen
USA NCA Officer
Posts: 764
Joined: 25 Nov 2003, 00:06
Sail number: USA 16
Club: Famous Potatoes Sailing Club
Design: Brit Pop
Location: USA 16

Re: jib boom counterweight

Post by Bruce Andersen » 19 Apr 2021, 23:46

What did you decide?

The rules pertaining to the "rig" state that material of any density is allowed below the "lower point", to allow counter weights to be placed onto or inside the spar to make all rigs the same weight (C.7.3 (a)).

The jib boom counterweight is not really a corrector weight (which is "fixed into the hull" per C.4.3).

It is listed in F.4.4(b)(3) as an "optional boom fitting".

If it is considered a "fitting" than (per F.4.1(c)), material is unrestricted, thus jib boom counterbalance weights of any material should be legal for use as a jib boom "fitting".
Bruce Andersen - USA 16
No longer a USA NCA Officer, but can't change my profile!

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