20.1 A new passenger vessel of 20 m or more in
length shall be fitted with watertight bulkheads fitted in accordance
with regulation III/21.
20.2 A new vessel of less than 20 m in length
shall have watertight bulkheads in accordance with regulation III/21, where it:
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.1 carries 50 or more passengers; or
-
.2 is of more than 12m in length and is certified
to operate on coastal waters ; or
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.3 is certified to operate in exposed waters.