6.2.1 In a motor vessel, the area of freeing ports
should be at least 4% of the bulwark area and be situated in the lower
third of the bulwark height, as close to the deck as practicable.
6.2.2 A vessel of less than 12 metres in length,
having a well deck aft which is fitted with bulwarks all round and
which is intended to operate no more than 60 miles from a safe haven,
(Area Categories 2-6), should be provided with freeing ports required
by Section 6.2.1 or may be provided with a minimum of two ports fitted
(one port and one starboard), which may be in the transom, each having
a clear area of at least 225 cm2 (0.0225 m2).
Ports may only be fitted in the transom on vessels where the shipping
of water will not result in a trim by the head such that water will
not drain.