HMS Onslow was an O-class destroyer

Destroyer

In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

 flotilla leader

Flotilla leader

A flotilla leader was a warship suitable for commanding a flotilla of destroyers or other small warships, typically a small cruiser or a large destroyer...

 of the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 She was ordered from John Brown & Company

John Brown & Company

John Brown and Company of Clydebank was a pre-eminent Scottish marine engineering and shipbuilding firm, responsible for building many notable and world-famous ships, such as the , the , the , the , the , and the...

 at Clydebank

Clydebank

Clydebank is a town in West Dunbartonshire, in the Central Lowlands of Scotland. Situated on the north bank of the River Clyde, Clydebank borders Dumbarton, the town with which it was combined to form West Dunbartonshire, as well as the town of Milngavie in East Dunbartonshire, and the Yoker and...

, Glasgow

Glasgow

Glasgow is the largest city in Scotland and third most populous in the United Kingdom. The city is situated on the River Clyde in the country's west central lowlands...

 on 3 September 1939. The ship was laid down on 1 July 1940 and launched on 31 March 1941. She was completed on 8 October 1941 at a cost of £416,942.

Attached to the Home Fleet, Onslow served mostly as an escort to Arctic Convoys

Arctic convoys of World War II

The Arctic convoys of World War II travelled from the United Kingdom and North America to the northern ports of the Soviet Union—Arkhangelsk and Murmansk. There were 78 convoys between August 1941 and May 1945...

. She also saw detached service in the Mediterranean during "Operation Harpoon

Operation Harpoon (1942)

Not to be confused with Operation Harpoon Operation Harpoon was one of two simultaneous Allied convoys sent to supply Malta in the Axis-dominated Mediterranean Sea in mid-June 1942, during the Second World War. One convoy, Operation Vigorous, left Alexandria. The other, Operation Harpoon, travelled...

" in 1942, and in the English Channel

English Channel

The English Channel , often referred to simply as the Channel, is an arm of the Atlantic Ocean that separates southern England from northern France, and joins the North Sea to the Atlantic. It is about long and varies in width from at its widest to in the Strait of Dover...

 before and after the Normandy landings in mid-1944. Her most notable action was at the Battle of the Barents Sea

Battle of the Barents Sea

The Battle of the Barents Sea took place on 31 December 1942 between German surface raiders and British ships escorting convoy JW 51B to Kola Inlet in the USSR. The action took place in the Barents Sea north of North Cape, Norway...

 in 1942, while escorting Convoy JW 51B to Russia. The convoy escorts held off attacks from the powerful , with Onslow being heavily damaged and her Captain, Robert St Vincent Sherbrooke severely injured.

Decommissioned in 1947, the ship was procured by the Pakistan Navy

Pakistan Navy

The Pakistan Navy is the naval warfare/service branch of the Pakistan Armed Forces. Pakistan's Navy is responsible for Pakistan's coastline along the Arabian Sea and the defense of important civilian harbors and military bases...

in 1949 and commissioned as PNS Tippu Sultan. She served in the Pakistan Navy until 1979.