The thickness of the ozone layerâthat is, the total amount of ozone in a column overheadâvaries by a large factor worldwide, being in general smaller near the equator and larger towards the poles. It also varies with season, being in general thicker during the spring and thinner during the autumn.
Report Abuse. How ever many you have-is your fleet of ships. The US Merchant Marines currently have 465 ships in their fleet. The US Navy has a fleet of 286 ships. A fleet is the total number of ships. It can be the total number of a nation, or can be a fleet of ships operating under the same ownership.
The First Fleet is the name given to the 11 ships which left Great Britain on 13 May 1787 to found a penal colony that became the first European settlement in Australia.he First Fleet included two Royal Navy escort ships, the ten-gun sixth-rate vessel HMS Sirius under the command of Captain John Hunter, and the armed tender HMS Supply commanded by Lieutenant Henry Lidgbird Ball.