She fired a starshell to illuminate the British cruiser and opened fire with her secondary guns.
Her forward secondary guns were removed in compensation.
Belfast also received new fire control radars for her main, secondary and anti-aircraft guns.
In short, secondary guns were a very important factor in battleship combat.
With the emergence of the threat from air-delivered weapons, the nature of the secondary guns changed once more.
After capture the ship was rearmed with new main and secondary guns.
During the course of the battle, she fired 106 main battery shells and 75 rounds from her secondary guns.
The 4.7-inch secondary guns were placed in casemates along the side of the ship.
Virtually all secondary guns were "quick firing", employing a number of innovations to increase the rate of fire.
Posen fired at Nestor with both her main battery and secondary guns.