Ol-class tanker (1965)

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RFA Olmeda
Class overview
Name	Ol class
Builders	Hawthorn Leslie and Company, Swan Hunter & Wigham Richardson
Operators	Royal Fleet Auxiliary,  Islamic Republic of Iran Navy
Preceded by	Tide class
Succeeded by	Wave class
In service	1965–2021
Completed	4
Lost	1
Retired	3
General characteristics
Class and type	Fast fleet tanker
Displacement	(full load) Olwen 33,773 long tons (34,315 t) Olna 36,605 long tons (37,192 t) Olmeda 33,240 long tons (33,773 t)
Length	648 ft (198 m)
Beam	84 ft 2 in (25.65 m)
Draught	34 ft (10 m)
Depth	44 ft (13 m)
Installed power	2x Babcock and Wilcox superheat boilers 26,500 shaft horsepower (19,800 kW)
Propulsion	2× Pametrada steam turbines, double reduction geared Single shaft Bow thruster
Speed	21 kn (24 mph; 39 km/h)
Range	10,000 nmi (19,000 km) at 16 kn (18 mph; 30 km/h)
Complement	88 RFA 40 RN
Armament	2× 20 mm guns 2× Chaff launchers
Aircraft carried	3× Westland Wessex or Westland Sea King helicopters
Aviation facilities	Helicopter deck, hangar
Notes	[1]

The Ol-class tankers were a series of three "fast fleet tankers" used by the Royal Fleet Auxiliary (RFA), the naval auxiliary fleet of the United Kingdom, tasked with providing fuel, food, fresh water, ammunition and other supplies to Royal Navy vessels around the world.