A 13-letter answer is martellotower.
ITs called a Martello
bay,cay, ria, voe,
An Coastal Indian tribal name and name of a small town in western BC.
The name of the small post was Fort Duquesne
Fort Adams is located in Newport, Rhode Island. It was contructed as a First System coastal fortification.
Garrett Fort's birth name is Garrett Elsden Fort.
One common name for dogfish is "smooth hound." They are a type of small shark that can be found in coastal waters.
The name of the fort is Fort Wood.
Another name for coastal plains
Just off the French Western coastal city of La Rochelle
Garrett Fort's birth name is Garrett Elsden Fort.
The fort at Willemstad is Fort Amsterdam. (: