E-1 class

===Description===
An improved versions of the D class with increased range, more torpedo tubes and a 12-pounder deck gun.
===Ship data===
Performance
Endurance: 5188 km
Maximum speed: 15 kts
Armour Protection
Armour: 1
Armament
1 x 12-pdr 18 cwt QF Mk I. Ammo: 100 rounds
4 x 18in Mk VIII Torpedo. Ammo: 8 torpedoes
===Ships in class===
* E.4
* E.5
Category:Royal Navy
Category:Ship type
Category:Submarine
Category:Fleet Submarine