There is no set number; like all fleet commands around the world, the number of naval assets assigned to 2nd Fleet changes constantly. This is because ships form different Task Forces, Battle Groups, etc., and may leave the 2nd Fleet's operational command area and enter another, or they're formed/assigned as tactical considerations warrant. Ships and other assets that might be assigned to 2nd Fleet's command may be from another Fleet; it depends on the situation and needs of the Navy.
The Second Fleet of the British First Fleet, which was sent to Australia, consisted of 11 ships. It departed from England in 1790 and was mainly tasked with transporting convicts to the newly established penal colony in New South Wales. The fleet included various types of vessels, such as transport ships and supply ships.
Cabral had thirteen ships under his command, with over 1500 people working on them.
9 ships.
194 Ships in the blockade fleet.
11
9 ships.
9 ships.
Nelson had 33 ships including 27 ships of the line.
3
eleven
11
alot alot