154.305—Segregation of hold spaces from the sea.
In vessels having cargo containment systems required by this part to have a secondary barrier, hold spaces must be segregated from the sea by:
(a)
A double bottom if the cargo tanks meet this part for design temperatures colder than −10 °C (14 °F); and
(b)
Wing tanks if the cargo tanks meet this part for design temperatures colder than −55 °C (−67 °F).