Possible Clues:

• Weight of cargo — ship's carrying capacity
• By the sound of it, wait for the North on time
• By the sound of it, wait to make the car go overseas
• Capacity of ship
• Carrying capacity of cargo ships
• Glitter, like Deighton's spy
• Wait for the ship, by the sound of it
• Ship's capacity Anne got wrong
• Carrying capacity of a sound horse enters into it
• Freighter's capacity