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 refers to the first fleet of eleven ships which arrived in Australia in January 1788, carrying convicts, officers, marines and their families. They arrived at â¦ Port Jackson, now known as Sydney, New South Wales, to establish a convict colony.board the ships of the First Fleet were over 700 convicts, almost 200 soldiers (some with wives and families) and Captains Arthur Phillip and John Hunter.