Ncik's post from home building thread.

Quote
With that wording, only a single compartment is required, which doesn't provide the level is safety that I believe is intended.

Preferred wording should state something along the lines of requiring two compartments of atleast 30 litres each, which I believe is the intent.

Something like...

1.5.2 Each hull shall carry atleast two compartments of alteast 30 liters of flotation each. The hull may be divided into two suitable compartments with a watertight bulkhead or a single compartment hull may be fitted with solid closed cell foam, solid blocks of compacted foam granulate or air bags of 30 litres volume each suitable attached to the hull.

A bit wordy but hopefully less ambiguous.

oops, probably wrong location for this.