Possible Clues:

• Shed for watercrafts
• Stole M Sartre's case in waterside shed
• The two crossing area by river to reach building close by it?
• Where outrigger principally is kept in city on river?
• Nothing in tub by river building close to the water
• Where nothing seeps into vessel by river?
• Bank building nothing in English city on river
• One may start a row from there
• Wet-bob's ultimate vow, to go on river — from this?
• Riverside structure