Your Battleship and Her Requirements

Your Battleship and Her Requirements: (Newsmap, May 1944)

U.S. Navy WW2 Battleship Poster

Continue reading Your Battleship and Her Requirements

Bolzano Italian Heavy Cruiser

Bolzano Italian Heavy Cruiser

Bolzano Cruiser WW2 Italian Navy

WW Bolzano Heavy Cruiser, Regia Marina

See Also: Italian Navy Ship Silhouettes

Source: FM 30-50: Recognition Pictorial Manual of Naval Vessels, U.S. Navy Department, September 1943.

Russian Battleship Sevastopol

Details and illustrations from a U.S. Naval Intelligence 1943 report on the Russian battleship Sevastopol:

Sevastopol Battleship Russia WW2

Russia WW2 Battleship BB Sevastopol - Silhouette Diagram and Dimensions

Russian Battleship Sevastopol - WW2 Russian Fleet



Date laid down: 1909.
Date commissioned: 1915.
Normal displacement: 23,000 tons.
Length overall: 594 feet.
Beam: 87 feet.
Maximum draft: 27 feet.
Type of machinery: Parson’s Turbines.
Horsepower: 42,000.
Number of Propellors: 4.
Type of boilers: Yarrow.
Number of boilers: 25.
Full speed: 18 knots.
Cruising speed: 16 knots with a cruising radius of 4,000 miles.
Aircraft normally carried: 2.
Launching device: 1 catapult.
Fire control: director control.
Number of searchlights: 6.


Armor: Belt 8 3/4 inches amidships; 5″ and 2″ at ends; 3″ to 4″ internal belt.
Turrets: 12″ – 10″; 8″ barbettes.
Decks: 3″.
FC towers: 10″ forward.

The armor belt is about 15 feet wide, five feet of it being below the water line, of uniform thickness; there is a second 3″ or 4″ internal belt from 11 feet inboard above the protective deck extending between it and the barbettes. The space between the main and internal belts is divided up into water tight compartments.


12 — 12″ 52 caliber guns in triple turrets with a maximum elevation of 25°, a muzzle velocity of 2644 feet per second, and a maximum range of 30,000 yards.
10 — 4.7″ 50 caliber guns in casemates with a muzzle velocity of 2624 feet per second.
6 — 4.1″ antiaircraft guns.
3 — 3.9″ antiaircraft guns.
4 — 3″ antiaircraft guns.

The port plates above each gun are in the form of a hinged flap, allowing each 12″ gun to elevate to 25° maximum.

Arcs of fire: end triple 12″ turrets is 310° central turrets, 130° on each beam; the after 4.7″ gun, 90° the other 4.7″ guns, 85°.

Main battery guns in number 2 and number 3 turrets have been replaced by guns of a “higher caliber”, reports indicate.

Number of torpedo tubes: 4 18″ submerged.


It is not believed that the modernization of this unit included an increased compartmentation of the hull as in the case of the other two units of this class. There is no evidence of external blisters having been fitted. The first stack was trunked aft, and a tripod foremast with FC top, and catapult have been fitted. Otherwise, the reconstruction does not appear to have been as extensive as on her sister ships.

This unit is reported to be most unhealthy, unsanitary and badly ventilated.

The Sevastopol proceeded from the Baltic Sea to the Black Sea in 1930 in company with the overage light cruiser Profintern. Her general condition, at that time was reported to be unfit and the official explanation of her remaining in the Black Sea was that she could not face the return voyage.


The main deck level centerline disposition of the four large triple turrets is unique among existing capital ships, readily distinguishable from the air.

At long range on the surface, this vessel bears a faint resemblance to the Japanese battleship of the FUSO Class.

Russian Battleship BB Sevastopol: Main turret gun armament Russian Battleship BB Sevastopol: Stern Antiaircraft Battery Russian Battleship BB Sevastopol: Three main battery triple turrets

Naval Terminology

Summary of naval terminology from FM 30-50: Recognition Pictorial Manual of Naval Vessels, U.S. Navy Department, September 1943:


Naval Ship Terminology

ABAFT _ _ _ behind; toward stern from.
ABEAM _ _ _ at right angles to the keel.
AMIDSHIPS _ _ _ the middle portion of a vessel.
ARMOR _ _ _ steel plating designed to defeat shells, bombs, or underwater explosion.
ARMOR BELT _ _ _ band of armor extending along a ship’s sides above and below water-line.
ATHWART _ _ _ across; from side to side; traversly.
BEAM _ _ _ extreme width of ship.
BILGE _ _ _ curved part of ship’s hall where sides and flat bottom meet.
BLISTER _ _ _ a bulge built into a ship’s side as a protection against torpedoes.
BOOM _ _ _ a free-swinging spar used to secure boats or to handle cargo, boats or aircraft.
BREAK _ _ _ the point at which upper decks are discontinued.
BRIDGE _ _ _ raised forward platform from which ship is conned and navigated.
BULKHEAD _ _ _ transverse or longitudinal partitions subdividing the interior of a ship.
BULWARKS _ _ _ light plating or wooden extension of ship’s sides above upper deck.
CASEMATE _ _ _ armored gun mount built into the sides or superstructure of a ship.
CLASS _ _ _ vessels of the same type built to a common basic design.
COMBINED OPERATIONS _ _ _ joint operations conducted by nonhomogeneous forces or forces of different services and/or nationalities.
COMPANIONWAY _ _ _ hatchway providing access from one deck to another.
COMPARTMENTATION _ _ _ subdivision of a ship’s hull by means of transverse and/or longitudinal bulkheads.
CONNING TOWER _ _ _ armored ship control station. In submarines, the main deck structure.
COUNTER _ _ _ side of a vessel’s quarter.
COWL _ _ _ a smoke baffle located on top of a funnel; opening of a ventilator.
DAMAGE CONTROL _ _ _ comprehensive term for all means of mitigating or offsetting effects of damage aboard ship.
DEPTH CHARGE _ _ _ explosive device projected or dropped from air or surface craft; detonated at predetermined depths by a hydrostatic mechanism.
DISPLACEMENT _ _ _ the weight of water displaced by a ship.
FANTAIL _ _ _ after section of the main deck.
FORE _ _ _ that part of a ship lying between bow and midship section.
FORE AND AFT _ _ _ lengthwise of a ship.
FORECASTLE _ _ _ deck; a forward upper deck extending to bow.
FREEBOARD _ _ _ height of a ship’s sides from waterline to a weather deck.
FLYING BRIDGE _ _ _ a light self-supporting structure extruding from side of ship’s bridge.
GUN HOUSE _ _ _ a lightly protected, rotating mount for guns of lesser calibre.
GUN SHIELD _ _ _ any protection for gun crews which does not completely enclose mouut.
GUNWALE _ _ _ upper edge of a vessel’s or boat’s side.
HALYARDS _ _ _ light lines used in hoisting signals, flags, etc.
HATCH _ _ _ opening in a deck.
HAWSE PIPES _ _ _ tubes leading anchor chains from deck down and forward through bow plating.
HELM _ _ _ the mechanism for operating the ship’s rudder.
HULL _ _ _ main body of a vessel exclusive of elements of superstructure.
ISLAND _ _ _ a free-standing section of a ship’s superstructure. On aircraft carriers, the ship’s superstructure.
KEEL _ _ _ center line strength member running fore and aft along the bottom of a ship.
KNOT _ _ _ a unit of speed, equalling one nautical mile (6,080.20 feet) per hour.
LIST _ _ _ traverse inclination of a vessel.
MAIN BATTERY _ _ _ the heaviest calibre gun armament carried by a naval vessel.
MAIN DECK _ _ _ a ship’s highest continuous deck.
MINE _ _ _ a device containing high explosive charge, free-floating or anchored at fixed depth, or resting on bottom; detonated by contact, or by electrical or magnetic impulse.
MULTIPLE MAST _ _ _ an exposed mast having one or more supporting elements.
PEAK (fore and aft) _ _ _ compartment at the extreme bow or stern of vessel below decks—usually a tank.
PORT _ _ _ left hand side of a vessel when looking towards bow; an opening.
QUARTER _ _ _ that portion of a vessel’s side near the stern.
QUARTER DECK _ _ _ part of upper deck reserved for officers; also the deck near the stern.
RADIO DIRECTION FINDER _ _ _ device for determining direction of source of radio impulses.
RAKE _ _ _ fore and aft inclination from vertical.
RANGEFINDER _ _ _ optical instrument for determining distance to a target or other object.
RECIPROCATING ENGINE _ _ _ a steam actuated piston engine as distinguished from a turbine.
RIGGING _ _ _ collective term for ropes and chains employed to support masts, yards, and booms of vessel.
SECONDARY BATTERY _ _ _ the gun armament next in calibre to main battery.
SHEER _ _ _ longitudinal upward or downward curvature of deck or gunwale.
SHEER LINE _ _ _ line formed by intersection of deck and sides of a ship.
SPLINTER SCREEN _ _ _ light armor shields for protection of crew.
STACK _ _ _ exposed uptake from ship’s boilers; funnel.
STARBOARD _ _ _ the right hand side of a vessel when looking towards bow.
STEM _ _ _ extreme forward line of bow.
STERN POST _ _ _ the main vertical post in the stern frame upon which the rudder is hung.
SUPERSTRUCTURE _ _ _ any structure built above a ship’s hull.
TASK FORCE _ _ _ a naval force organized to carry out a specific mission.
TURRET _ _ _ a rotating mount enclosed by armor for guns of large calibre.
TWIN TURRET _ _ _ a turret housing two guns.
TYPE _ _ _ all vessels built or converted for the same purpose.
WEATHER DECK _ _ _ any deck exposed to weather.
WELL _ _ _ a lateral opening in a ship’s hull or superstructure.


U.S. Naval Vessels Type Designations

U.S. Navy WWII vessel type abbreviations from FM 30-50: Recognition Pictorial Manual of Naval Vessels, U.S. Navy Department, September 1943:



BB  Battleship
CB  Large Cruiser
CV Aircraft Carrier
CVL Aircraft Carrier (Light)
CVE Aircraft Carrier (Escort)
CA Heavy Cruiser
CL Light Cruiser
DD  Destroyer
DE Destroyer Escort Vessel
SS Submarine
SM Minelaying Submarine

Continue reading U.S. Naval Vessels Type Designations