The Archer and Avenger classes were built by the United States and Lend Leased to Great Britain. They were originally merchant ships that were converted into escort carriers.
There were four engines that drove the single propellar.
The flight deck was make of wood.
There was a small island located on the starboard side.
There was a single 38' x 34' elevator and could lift 12,000 lb on the HMS Archer. On the Avenger class the elevator was 42' x 34'.
The single catapult could launch 7,000 lbs at 60.8 knots.
Once the Avenger class ships arrived in Great Britain they had their flight decks increased to 440'.
In the after part of the Archer class was a half hangar. It was 18' 9" high.
The Avenger class had a height of 16'.