Operation Substance was a British naval operation in July 1941 during the Second World War to escort a convoy from Gibraltar to Malta. For the movie, see 1941 (film) 1941 (MCMXLI) was a common year starting on Wednesday (the link is to a full 1941 calendar). ... Mushroom cloud from the nuclear explosion over Nagasaki rising 18 km into the air. ...

The convoy was escorted by 6 destroyers and covered by aircraft carrier HMS Ark Royal, the battlecruiser HMS Renown and the battleship HMS Nelson along with cruisers and destroyers. On 23 July, south of Sardinia, there were sustained Italian air attacks which resulted in one cruiser damaged and one destroyer sunk. The merchant ships reached Malta safely and an Italian raid to sink them in Grand Harbour failed. An aircraft carrier is a warship designed to deploy and recover aircraft—in effect acting as a sea-going airbase. ... HMS Ark Royal (R07) in Greenwich dock, London This is a disambiguation page — a navigational aid which lists pages that might otherwise share the same title. ... HMS Hood (left) and the battleship HMS Barham (right), in Malta, 1937. ... HMS Renown is a ship name used by the Royal Navy. ... HMS Victory in 1884. ... HMS Nelson was an ironclad battleship of the Royal Navy. ... USS Port Royal (CG-73), a Ticonderoga-class guided missile cruiser, launched in 1992. ... USS Lassen, an Arleigh Burke-class destroyer In naval terminology, a destroyer (French: contre-torpilleur, German: Zerstörer, Spanish: destructor, Italian: cacciatorpediniere) is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet or battle group and defend them against smaller, short-range attackers... July 23 is the 204th day (205th in leap years) of the year in the Gregorian Calendar, with 161 days remaining. ... Sardinia (Sardegna in Italian, Sardigna or Sardinna in the Sardinian language, is the second largest island in the Mediterranean Sea (Sicily is the largest), between Italy, Spain and Tunisia, south of Corsica. ... Grand Harbour is an excellent natural harbour on the island of Malta. ...