Are we talking about the 150 cm in 6 x 2 secundary weapon?
¿Estamos hablando de los 150 en seis dobles montajes?
Regards from La Corunna-
Saludos desde LA Coruña-.

This happened at Alta: on 15 September, an attack by 27 Lancasters from the 9th and 617th squadrons in operation 'Paravane' had limited success : A 5500 kg 'Tallboy' bomb pierced the foredeck and exploded under the ship. Due to the shock waves and as a result of earlier damage, the ship was no longer capable of high speed. The Tirpitz was still able to sail under her own power to Tromsø, where the ship was fitted out as a floating coastal battery. The Tirpitz anchored above a sand bed that was to prevent the ship from capsizing or sinking deeply,[22] Focke-Wulf 190 fighters were stationed at nearby Bardufoss airfield to provide air cover.

Not in Alta but lying at Tromsø, the Tirpitz was attacked again on 12 November 1944 in Operation 'Catechism' by 29 British Avro Lancaster bombers armed with 'Tallboy' bombs. Due to poor communications, German fighters had failed to reach the Tirpitz in time. The smoke screen generators that had so often hampered air attacks were not yet operational and the British planes were able to make an easy attack. A first hit amidships caused extensive damage and flooded large parts of the ship, a second hit between the two forward gun turrets was a dud, and it is unclear whether there was a third hit, because nearby hits had completely obliterated the sand bed under the Tirpitz, the ship capsized anyway. [26] Of the 1058 crew members trapped in the overturned ship, 87 could still be saved by burning holes in the ship's hull.[27]
After the war, the ship was scrapped on site between 1949 and 1957.
Regards
Henk