Related Clues:
- Things rested on, metaphorically
- Blades in lakes
- Rows with some characters getting into Arsenal
- Trig findings
- Dinghy steering tools
- Offshore devices
- Ordinary Seaman crosses a river — boat may need these
- Certain math ratios
- Crew's need
- Galley equipment
- Rows with co-authors losing touch
- Some trigonometry findings
- Trigonometry findings
- Tools in locks
- Galley slaves' tools