The type was also mounted in a single twin turret aboard the Surcouf, which was designed as a submarine heavy cruiser intended to disrupt enemy supply lines.

After a proposal for a catapult was abandoned because of insufficient reserve stability, an extra twin turret was decided upon to boost the ship's firepower.

Now he had theAvenger with her twin turrets, each mounting two 400-pound Parrott guns, far heavier than the guns he had used before.

In early 1915 the twin turret was removed and replaced by two shielded single 6 inch guns fore and aft.

The fifth twin turret was added later to Dido only.

An enclosed twin turret was developed for later destroyer classes and monitors.

B-2LMT twin turret was used as the armament on the monitors Sivash and Perekop and with Shilka class monitors.

Each ship carried two 548-tonne twin turrets and two 745-tonne triple turrets.

Terra-cotta tiles embossed with sea motifs are set into the Spanish yellow facade, and two florid ceramic urns top twin turrets.

The main battery railgun was suppressed in favor of additional missile power and four high-trajectory 180mm howitzers in two back-to-back twin turrets.