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#8866
Swiebertje
Participant

On a MK2 the foam may be placed under the gunwales to keep the aft locker free for baggage. See class rules:

34.4 Positive buoyancy units of closed cell plastics foam. Shall be securely fixed within the hull of G.R.P. and composite boats, as follows (lift refers to buoyancy when submerged in fresh water):

(b) [Mk II (except SD versions)]. One unit providing not less than 40.82 (90 lbs) lift in the forward compartment. Units providing a total lift of not less than 40.82 (90 lbs) under each side deck, aft of the main shrouds.

(c) Alternative for MK IA and MK II (except SD versions). One unit providing not less than 40.82 (90 lbs) lift in the forward compartment. Units providing a total of not less than 13.6 (30 lbs) beneath each side deck and two units providing a total of not less than 54.42 (120 lbs) lift in the aft compartment. The units shall be positioned according to the official drawing.