Section 193 applies with the modifications set out in subsections (2) and (3) if—
the duty under section 193(1) or 193(2) applies to a proposal to dismiss employees as redundant, and
some or all of the employees concerned are members of the crew of a seagoing ship which is registered at a port outside Great Britain.
The employer shall give the notification required by section 193(1) or (2) section 193(2) , so far as relating to the members of crew of a ship within subsection (1)(b), to the competent authority of the state where the ship is registered (as well as to the Secretary of State).
Where this subsection applies, section 193 is to be read as if references in subsections (4) and (6) to a notice were to the notice that is required to be given to the Secretary of State.
In this section "ship" includes—
any kind of vessel used in navigation, and
hovercraft.