Los Angeles-class

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## Contents

* 1 Design goals
* 2 Evolving characteristics
* 2.1 SSN 688-718
* 2.2 Flight II
* 2.3 Improved 688i
* 3 Successors
* 4 References

United States Navy Los Angeles-class attack submarines have been in three major generations, starting with the 31 boats of the SSN-688 design, beginning with USS Los Angeles (SSN-688), commissioned in 1971. A number of this group have been decommissioned.

The 23 boats, from SSN 719 onward, added vertical launch system tubes, primarily for land attack BGM-109 Tomahawk cruise missiles. The final 31 boats (Improved Los Angeles-class), also called "Improved 688i", have improved under-ice capability, better electronics, and are quieter.

## Design goals[edit]

Considerable controversy went into establishing the design goals for the class. Just as surface warships classically have to balance armament, protection and speed, submarines need to balance even more factors:

* Speed
* Operational depth
* Quietness
* Habitability
* Armament

The previous Sturgeon-class was a more general-purpose design; the top priority for the Los Angeles was sufficient speed to cruise with aircraft carriers.[1]

## Evolving characteristics[edit]

### SSN 688-718[edit]

### Flight II[edit]

### Improved 688i[edit]

## Successors[edit]

## References[edit]

1. ↑ Phillip Boyer (September 28,1990), speech for the decommissioning of USS Queenfish (SSN651) on Friday, 9/21/90, Submarine base, Pearl Harbor, "Patrol" newspaper