The Boats of the Early
Bernardis Type

by Cristiano D'Adamo

Weapons

Torpedoes

All "Bernardis" excluding the "Pisani" were fitted with four torpedo tubes aft and four forward. The "Pisani" had only two tubes aft. All tubes were loaded before leaving port and two extra torpedoes were stowed in each compartment giving the "Pisani" a total of 10 torpedoes, while all other boats had 12. Torpedoes were loaded through a special hatch and the operation was very laborious. Once at sea, torpedoes could be removed from the tubes for limited maintenance (fuel topping).

Range, speed and direction of the weapons could be configured while they were inserted in the tubes. The tubes could take a variety of 21' (533 mm) torpedoes produced both by Whitehead and "Silurificio Italiano". Similar to the Royal Navy, the Regia Marina did not experience the kind of massive torpedo failure which plagued the U.S. Navy and the Kriegsmarine.
 

Smaller weapons

Each boat was equipped with a small armory containing rifles and side arms.

Deck Guns

The early "Bernardis" were fitted with a 4" (102) mm deck gun caliber 35 produced by O.T.O. (Model 1931, 35 and 38). These guns had a maximum range of 14,500 meters, but the practical range, due to the simplicity of the optical range-finder, was much lower.
 
The deck gun of the "Fratelli Bandiera"
(Photo Turrini)
The "Pisani" carried a total of 168 shells: 22 kg Ap or smaller 13.8 kg conventional shells. The "Bandiera" and “Squalo” had a reserve of 150 shells. The muzzle velocity, originally at around 730 m/s, was later increased to 840 m/s. A well-trained gunnery team could fire eight shells per minute. Shells were loaded from the stowage area below onto the main compartment and from there pushed up to the deck through a tube. The gunners also had access to a ready storage area built into the cunning tower and secured by a watertight hatch.

Machine Guns

All "Bernardis" were equipped with the famous Breda Model 1931 13.2 mm anti-aircraft machine gun. These guns were mounted on a single support. The guns were installed on a retractable mount which would recede into a water-tight tube protected by a small hatch. Upon emerging, the gunners had to simply release the hatch, lift the guns out of the enclosure, install a clip and fire. Each clip contained 30 rounds and the gun could fire up to 400 rounds per minute at a range of 2,000 meters. These boats had a reserve of 3,000 rounds. As with all Italian submarines, toward the end of the conflict it was discovered that the 13.2 mm guns were insufficient in downing large American bombers protected by a thick armor.
 

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