Related Clues:

• Unit of speed used by ships
• A sheepshank or bowline
• Could be a granny or a sheepshank
• Unit of length used in navigation
• A nautical mile per hour
• Unit of speed at sea
• Hard mass in tree trunk at branch joint
• That isn't sound
• It isn't the sound of the sound of the tide
• Such speed on the water might lead to a tie
• That isn't the sound of the tide, by the sound of it
• Sounds as if it isn't the tide
• The sound of the tide? Sounds as if it isn't
• Sounds as if it's tied, but fast at sea
• Tied, fast as the tide