Was a four engine torpedo bomber ever considered?

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Didn't always work however..

The hole made in the side of HMS Malaya by a Highball during trials in Loch Striven in May 1944.
 
The Lanc dropping torpedoes would have been a badass sight to behold.

Well, maybe not for the intended victims, though...
Well the AVRO Manchester was designed to carry torpedoes:



And one could argue that the Rolls-Royce Vulture was a twinned engine whereby cylinder blocks derived from the Rolls-Royce Peregrine were joined by a common crankshaft supported by a single crankcase, so one might argue it does qualify as a 4 engined torpedo bomber design...
 
See post #6 on page 1. The torpedo dropping requirement was dropped in Aug 1937, only a few months into its development and 2 years before it flew.
 
The big Japanese 4-engined flying boats, Kawanishi H6K (or Type 97, Large flying boat, designated "Mavis" by the Allies) flew missions armed with two torpedoes.

John Lundstrom, in his book "The First Team: Pacific Naval Air Combat from Pearl Harbor to Midway" (p. 88). Naval Institute Press. wrote:
"Additional Kawanishi flying boats from the Yokohama Air Group stood by at Rabaul for possible night torpedo strikes. In a pinch each big flying boat could carry two torpedoes. The Japanese were definitely ready and waiting."

He again mentions this capability on pages 107-108:
"After midnight on 21 February, six torpedo-laden Kawanishi flying boats departed Rabaul for a night search and destroy mission. They failed to find the American warships and after sunrise returned to base."

Both of these references took place during the aborted strike against Rabaul by the Lexington in Feb. 1942.
 

... for thirty minutes or so.
 
And a PBY scored the only American torpedo hit of the battle of Midway. IIRC they could carry two fish as well.
Most of the USN flying boats that had the "PB" (Patrol, Bomber) designation, could carry torpedoes.

Martin's PB2M was to have carried four torpedoes, but it ended up being an unarmed transport, designated JRM.
 
Supposedly the PB4Y Privateer could carry torpedoes but I have yet to see any photos proving it.
 
There actually was a target ship - the old French dreadnought Courbet. She had sat idle since fleeing to the UK in July 1940 and been partially disarmed. She was towed to Scotland for the Highball trials. She had a broad vertical white stripe painted on one of her funnels, all the way down the hull to the waterline (I think...). Various instrumentation was mounted on her to record the drops. At least one of the bombs went off target and made bit of a hole in the poor old girl . She survived the indignity and went on to be scuttled as part of the breakwater off Arromanches on D-Day
 

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