Related Clues:

• Vessel going round a river?
• Vessel with paralleltwin hulls
• Twin-hulled craft
• A river encircled by one vessel — or another?
• Vessel, one where a flower's preserved?
• Boat for sailing about river must be given a name
• Boat mostly easy to handle within a group of islands, passing cape
• About time to take army regularly to islands, on this?
• Crossing a river, vessel finds boat
• Boat is able to cross a river
• Boat with two hulls
• This boat can, going across a river
• A craft based on fundamental duplicity
• Boat can, crossing a West Country river
• A border flower planted in tin vessel