ANSWERS 

1. Cross the Atlantic on continuous steam power.

2. Types of sails

3. The S.S. United States

4. A tax - levied in 1634 - on the seaport towns and in the following year, on the inland towns too.

5. The Savannah

6. Stockholm. (The Vasa was raised from Stockholm Harbour in 1961, 333 years after her  ill-fated maiden voyage in 1628)

7. A two-masted sailing vessel with square sails on both masts and a gaff mainsail.

8. Scottish

9. Richard the Lionheart

10. The Dutch Admiral Van Tromp

11. The first ship to have sailed around the globe

12. Portsmouth

13. A mark painted on the side of the ship to show the limit to which any ship may be loaded.

14. The Great Britain

15. The foot of the mast (it is a socket for the mast).