Captain C. E. Morgan commanding HMS Valiant described the final moments of the Battleship:
Our battleships were proceeding westwards line ahead, with the Valiant immediately astern the Barham and with a destroyer screen thrown out ahead of the battlefleet. At 4.23 p.m., carrying out a normal zigzag, we turned to port together, thus bringing the ships into echelon formation.
Suddenly, at 4.25, I heard a loud explosion, followed by two further explosions a couple of seconds later. Fountains of water and two enormous columns of smoke shot skywards. The smoke formed an enormous mushroom, gradually enveloping the whole of the Barham, except the after part, which was subsequently also blotted out as the ship slid into a vast pall of smoke.
As the explosions occurred the officer on watch gave the command “ Hard to port,” to keep clear of the Barham.
Fifteen seconds later I saw a submarine break the surface, possibly forced there by the explosion. Passing from left to right, the submarine was apparently making to cross the Valiant’s bows between us and the Barham. He was only about seven degrees off my starboard bow and 150 yards away, though he must have fired his torpedoes from about 700 yards.
As the periscope and then the conning tower appeared I ordered “ Full speed ahead, hard starboard.” But, with the helm already hard to port, I was unable to turn quickly enough to ram him before he crash-dived only 40 yards away on our starboard side. The submarine was visible for about 45 seconds, and, simultaneously with our ramming efforts, we opened fire with our starboard pom-poms. He was so close, however, that we were unable to depress the guns sufficiently and the shells passed over the conning-tower.
I then gave the order “Amidships” again to avoid turning into the Barham, which was still under way with her engines running but listing heavily to port. As we came up on her beam she heeled further about 20 or 30 degrees, and through the smoke I could see all her quarter-deck and forecastle. Men were jumping into the water and running up on the forecastle.
The Barham was rolling on a perfectly even keel with neither bows nor stern sticking into the air. For one minute she seemed to hang in this position; then, at 4.28, she suddenly rolled violently, her mainmast striking the’ surface of the sea sharply a few seconds later.
I saw water pouring into her funnels. There followed a big explosion amidships, from which belched black and brown smoke intermingled with flames. Pieces of wreckage, Hung high into the air, were scattered far and wide, the largest piece being about the size of my writing-desk.
I immediately ordered “ Take cover ” as the wreckage started flying, and that was the last we saw of the Barham, which had run almost’ a mile since the moment she was hit. When the smoke cleared the only signs left were a mass of floating wreckage.
The 35,000-ton ship disappeared with unbelievable suddenness; it was only 4 minutes 35 seconds exactly from the moment the torpedoes struck until she had completely disappeared.
There is much more material relating to the ship at HMS Barham.
It was not until much later in the war that film of the loss of the Barham was made available publicly: