22.2.1 Bulwarks and/or guardrails on all accessible
decks should be 1000mm high except that on vessels built to 1959 Load
Line Rules these may be 915mm high. Any opening should not exceed
380mm. Where no bulwarks are fitted, or bulwark height is less than
230mm, the lowest opening should not exceed 230mm. They should be
supported at intervals not exceeding 2.2 metres. Intermediate courses
of rails or wires should be evenly spaced.
22.2.2 Satisfactory means (in the form of guard
rails, life lines, gangways or underdeck passages, etc.) shall be
provided for the protection of the crew in getting to and from their
quarters, the machinery space and all other areas used in the necessary
work of the craft.
22.2.3 Where the function of the vessel would
be impeded by the provision of bulwarks and/or guard rails complying
with 22.2.1, alternative proposals detailed to provide equivalent
safety for persons on deck should be submitted to the Administration
for approval.