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4. swim or spend time in the sea or a lake, river, or pool.
6. a vehicle equipped for living in, typically towed by a car and used for holidays.
7. a medium-sized sailing boat equipped for cruising or racing.
8. the ability to see something or to be seen from a particular place.
10. keep or accumulate (something) for future use.

1. a steel bar or continuous line of bars laid on the ground as one of a pair forming a railway track.
2. floor of a ship, especially the upper, open level extending for the full length of the vessel.
3. a place that is frequented for holidays or recreation or for a particular purpose.
5. a plastic or rubber object that must be filled with air before use.
9. having no windows.