Description

Used on the only "Treaty" cruisers ever to serve in a South American Navy. Built by OTO at La-Foce and Livorno, Italy, these cruisers were considered to be very successful.

Gun Characteristics

Designation 7.5"/52 (19 cm) OTO
Ship Class Used On Veinticinco de Mayo class
Date Of Design 1927
Date In Service 1931
Gun Weight N/A
Gun Length oa N/A
Bore Length 389.0 in (9.880 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 3 to 5 rounds per minute (?)

Ammunition

Type Bag
Projectile Types and Weights SAPC: 200 lbs. (90.7 kg)
HE: 200 lbs. (90.7 kg)
Bursting Charge N/A
Projectile Length N/A
Propellant Charge N/A
Muzzle Velocity 3,116 fps (950 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun 150 rounds

Range

Range of 200 lbs. (90.7 kg) SAPC Shell with MV of 3,116 fps (950 mps)
Elevation Distance
45 degrees 29,860 yards (27,300 m)

Mount / Turret Data

Designation Twin Mounts:
  • Veinticinco de Mayo (3): N/A
Weight N/A
Elevation -7 / +45 degrees
Elevation Rate N/A
Train about +150 / -150 degrees
Train Rate N/A
Gun recoil N/A
Loading Angle -7 to +12 degrees

Sources

Data from:

  • "Naval Weapons of World War Two" by John Campbell
  • "Cruisers of World War Two" by M.J. Whitley