Related Clues:

• 'On a ship or train, say (6)'
• Saw this onto the ship
• The directors are all at sea
• Are all the directors loaded?
• The directors have left the land
• Cave? That's all for show
• You have to be this to walk the plank
• Here on 16 across one is not always 2 down of the 5 down
• Directors on the ship
• The directors have embarked on this
• Saw it onto the ship
• Directors all at sea
• Where one might have walked the plank
• Directors for an offshore company?
• One may be on 4 across with the sound of 1 across (6)