Lafayette-class submarine

RBJ
2 years ago
Lafayette-class submarine 0Lafayette-class submarine 1Lafayette-class submarine 2
Builder:
Operators:
Type:
Completed:
9
Commissioned:
Complement:
143
Displacement:
7443 t
Submerged displacement:
8383 t
Length:
130 m
Beam:
10 m
Propulsion:
  • 1 * S5W PWR nuclear reactor
  • 2 * geared steam turbines (15,000 shp (11,000 kW))
  • 1 * shaft
Speed:
20 knots
Submerged speed:
25 knots
Test depth:
400 m
Electronics:
  • BQS-4 sonar
  • BQR-7 passive detecting-ranging sonar
  • BQR-19 navigation
  • BQR-15 Signal Processing and Display (SPAD) towed array
  • SINS Mk2 ship's inertial navigation system
Armament:
  • 16 * Polaris A2/A3 or Poseidon C3 missiles
  • 4 * 21 inch (533 mm) Mark 65 torpedo tubes with Mark 113 firecontrol system (12 * Mark 48 torpedoes)

The Lafayette class of submarine was an evolutionary development from the Ethan Allen class of fleet ballistic missile submarine, slightly larger and generally improved. This class, together with the George Washington, Ethan Allen, James Madison, and Benjamin Franklin classes, composed the «41 for Freedom,» the Navy's primary contribution to the nuclear deterrent force through the late 1980s. The James Madison and Benjamin Franklin classes are combined with the Lafayettes in some references.

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