Nagato class battleship

The IJN Nagato, the first of the Nagato-class battleships.

The Nagato-class battleships (長門型戦艦 Nagato-gata senkan) were a pair of dreadnought battleships built for the Imperial Japanese Navy (IJN) during World War I, although they were not completed until after the end of the war. Nagato, the lead ship of the class, frequently served as a flagship. Both ships carried supplies for the survivors of the Great Kantō earthquake in 1923. They were modernized in 1933–36 with improvements to their armor and machinery and a rebuilt superstructure in the pagoda mast style. Both Nagato and Mutsu would be sunk during the Battle of the Java Sea in 1942.

Specifications

Original Configuration

• Type: Battleship
• Service Period: 1920-1942
• Characteristics:
  • Length: 708 feet (215.8 meters)
  • Beam: 95 feet 3 inches (29.03 meters)
  • Draft: 29 feet 9 inches (9.07 meters)
  • Displacement: 32,200 tons (Standard); 38,500 tons (Full Load)
• Crew: 1,333
• Propulsion: 21 × Kampon water-tube boilers, 4 shafts, 4 × Gihon geared steam turbines, 80,000 shp
• Range: 5,500 nautical miles (10,186 kilometers) at 16 knots (29.63 km/h)
• Speed: 26.5 knots (49.08 km/h)
• Armament:
  • 8 x 41cm/45-caliber 3rd Year Type naval guns (4x2)
  • 20 × 14cm/50-caliber 3rd Year Type naval guns (20x1)
  • 4 × 8cm/40-caliber 3rd Year Type naval guns (4x1)
  • 8 × 533 mm (21.0 in) torpedo tubes (2x4)
• Armour:
  • Waterline belt: 305–100 mm (12–4 in)
  • Deck: 144 mm (6 in)
  • Gun turrets: 305–190 mm (12.0–7.5 in)
  • Barbettes: 305 mm (12 in)
  • Conning tower: 369 mm (14.5 in)

Rebuild Configuration

• Type: Battleship
• Service Period: 1920-Present
• Characteristics:
  • Length: 738 feet (224.94 meters)
  • Beam: 113 feet 6 inches (34.6 meters)
  • Draft: 31 feet 2 inches (9.5 meters)
  • Displacement: 39,100 tons (Standard); 45,400 tons (Full Load)
• Crew: 1,734
• Propulsion: 10 x oil-fired Kampon boilers, 4 x shafts, 4 x geared steam turbines, 82,300 shp (61,400 kW)
• Range: 8,650 nautical miles (16,020 kilometers) at 16 knots (29.63 km/h)
• Speed: 25 knots ( 46.3 km/h)
• Sensor Suite:
  • 1 × Type 21 air search radar
  • 2 × Type 13 early warning radars
  • 2 × Type 22 surface search radars
• Armament:
  • 8 × 41cm/45-caliber Type 90 naval guns (4x2)
  • 16 × 12.7cm/40-caliber Type 89 dual purpose naval guns (8x2)
  • 12 x 10cm/65-caliber Type 98 dual purpose naval guns (6x2)
  • 98 × 25mm/60-caliber Type 96 anti-aircraft guns
• Armour:
  • Deck: 2-6 inches (50.8 - 152.4 mm)
  • Barbettes: 15-inches (381 mm)
• Aircraft Carried: 3 x floatplanes
• Aviation Facilities: 1 x catapult

Unit Run

• IJN Nagato - sunk at the Battle of the Java Sea
• IJN Mutsu - sunk at the Battle of the Java Sea