Guantanamo Bay also is well protected against the ravages of tropical storms. The smaller classes of warships and patrol boats needed to guard littoral waters, close to shore in and around Cuba, can snuggle easily within its confines. These vessels converted to oil-fired boilers, but the station at Guantanamo was still needed by larger, capital warships that continued burning coal well into the Twentieth Century.
Today's littoral warships are busy protecting the approaches to the Suez Canal where Sudanese pirates are active these days.
Thus, the United States makes its lease payment to Cuba every year by check and Castro refuses to cash them.