4.2.4.1 At least one entrance shall be fitted
with a boarding ramp, capable of supporting a person weighing 100
kg sitting or kneeling and not holding onto any other part of the
liferaft, to enable persons to board the liferaft from the sea. The
boarding ramp shall be so arranged as to prevent significant deflation
of the liferaft if the ramp is damaged. In the case of a davit-launched
liferaft having more than one entrance, the boarding ramp shall be
fitted at the entrance opposite the bowsing lines and embarkation
facilities.
4.2.4.2 Entrances not provided with a boarding
ramp shall have a boarding ladder, the lowest step of which shall
be situated not less than 0.4 m below the liferaft's light waterline.
4.2.4.3 There shall be means inside the liferaft
to assist persons to pull themselves into the liferaft from the ladder.