Its torpedo tubes were fitted to the bows and the submarine was loaded with eight 21 inches ( 530 mm ) torpedoes .
H42 was fitted with an anti-aircraft gun and four 21 inches ( 530 mm ) torpedo tubes .
H42 's torpedo tubes were fitted to the bows and the submarine was loaded with eight 21 inches ( 530 mm ) torpedoes .
H42 was fitted with an anti-aircraft gun and four 21 inches ( 530 mm ) torpedo tubes .