San Antonio class Amphibious Transport Dock - LPD

 

San Antonio class LPD 17 amphibious transport dock landing ship us navy

 

 

Units

in service

builder

LPD 17 USS San Antonio

2006

Huntington Ingalls Industries (formerly NGSS), Avondale Division, New Orleans, Louisiana

LPD 18 USS New Orleans

2007

Huntington Ingalls Industries (formerly NGSS), Avondale Division, New Orleans, Louisiana

LPD 19 USS Mesa Verde

2007

Huntington Ingalls Industries (formerly NGSS), Ingalls Division, Pascagoula, Mississippi

LPD 20 USS Green Bay

2009

Huntington Ingalls Industries (formerly NGSS), Avondale Division, New Orleans, Louisiana

LPD 21 USS New York

2009

Huntington Ingalls Industries (formerly NGSS), Avondale Division, New Orleans, Louisiana

LPD 22 USS San Diego

2012

Huntington Ingalls Industries (formerly NGSS), Ingalls Division, Pascagoula, Mississippi

LPD 23 USS Anchorage

2013

Huntington Ingalls Industries (formerly NGSS), Avondale Division, New Orleans, Louisiana

LPD 24 USS Arlington

2013

Huntington Ingalls Industries (formerly NGSS), Ingalls Division, Pascagoula, Mississippi

LPD 25 USS Somerset

2014

Huntington Ingalls Industries (formerly NGSS), Avondale Division, New Orleans, Louisiana

LPD 26 USS John P. Murtha

2015?

Huntington Ingalls Industries (formerly NGSS), Ingalls Division, Pascagoula, Mississippi

LPD 27 USS Portland

?

Huntington Ingalls Industries (formerly NGSS), Ingalls Division, Pascagoula, Mississippi

LPD 28 cancelled?

 

 

 

specifications / technical data:

Displacement:

25585 long tons / 25995 metric tons (full load)

Length:

208,50 meters

Beam:

31,90 meters

Draft:

7 meters (full load)

Speed:

22+ knots (= 41 km/h)

Propulsion:

4 sequentially turbocharged Colt-Pielstick diesel-engines (41600 shp) / 2 shafts, 2 propellers

Aircraft:

Hangar: maintenance facilities for 1 CH-53E, or 2 CH-46s, or 1 MV-22, or 3 UH/AH-1s;
Landing: 2 CH-53s, or 4 AH/UH-1s, or 4 CH-46s, or 2 MV-22s, or 1 AV-8B Harrier

Landing crafts:

2 LCAC or 1 LCU

EFV / AAV:

14 Expeditionary Fighting Vehicles (EFV) or Amphibious Assault Vehicles (AAV)

Armament:

2 x Mk-46 30mm gun weapon systems (GWS)

2 x Mk-49 launchers for RIM-116 Rolling Airframe Missile (RAM) (2 x 21 missiles)

2 x Mk-41 8-cell VLS for quad-packed RIM-162 Evolved Sea Sparrow Missiles (ESSM) (optional)

10 .50 cal. (12,7mm) machine guns

Complement:

ship: 360 sailors (28 officers / 332 enlisted) and 3 Marines

landing force: 66 officers / 633 enlisted (surge capacity to 800)

 

Expeditionary Warships for the 21st Century:

The San Antonio class is designed and built to fight. Its warfighting capabilities include a state-of-the-art command and control suite, substantially increased landing force vehicle lift capacity, a large flight deck, and advanced ship survivability features that enhance its ability to operate in the unforgiving littoral environment. The deployment of LPD 17s will provide each naval expeditionary force with greatly enhanced operational flexibility. The LPD 17 can operate as part of an Amphibious or Joint Task Force; serve as an integral part of a three-ship ARG; or deploy as part of a larger ESG – each organized to accomplish a broad-range of military objectives. Alternatively, if the mission requires, the LPD 17 with its landing forces may detach and operate independently for short periods of time to accomplish lower-risk missions. This mission flexibility will expand future commanders’ courses of action by providing an improved capability to cover multiple areas of responsibility with the right force at the right objective.

The LPD 17 class of ships is a key element of the Navy’s seabase transformation. Collectively, these ships functionally replace the LPD 4, LSD 36, LKA 113, and LST 1179 classes of amphibious ships providing the Navy and Marine Corps with modern, seabased platforms that are networked, survivable, and built to operate with 21 st century transformational platforms. Each LPD 17 has over 23,600 square feet of vehicle storage space, more than double that of the LPD 4 class ships it will replace. When the last ship reaches the fleet, the Navy’s expeditionary force will have the versatile lift it needs to support forward presence operations and successfully implement the OMFTS and STOM concepts.

The LPD 17 is the first amphibious ship designed to accommodate the Marine Corps’ “mobility triad” – Expeditionary Fighting Vehicle (EFV), landing craft air cushion (LCAC), and the Marine Corps’ new tilt-rotor MV-22 Osprey – that will perform high-speed, long-range tactical-lift operations. Just as “littoral” has come to mean operations that begin well “over-the-horizon” (OTH), hundreds of miles from an adversary’s coastline, the “mobility triad” will ensure our ability to “reach out and touch someone” hundreds of miles inland, at increased speeds.


Designed to fight, the San Antonio Class’ warfighting capabilities include a state-of-the-art command and control suite, substantially increased vehicle lift capacity, a large flight deck, and advanced ship survivability features that enhance its ability to operate in the unforgiving littoral environment. The deployment of LPD 17s will provide each naval expeditionary force with greatly enhanced operational flexibility. The LPD 17 can operate as part of an Amphibious Task Force - the "workhorse" of a three-ship ARG - organized to accomplish a broad range of military objectives; or as an element of a "Split-ARG" that has the LPD 17 detached and operating as a single ship, supporting lower-risk operations. Furthermore, it has the warfighting potential to fully operate within an Expeditionary Strike Group or perhaps serve as a “mother ship” to planned Littoral Combat Ships. This mission flexibility fully expands the ARG's or ESG’s area of influence by providing an improved capability to cover multiple areas of responsibility, while responding to several crises simultaneously.

Improved LIFT - strategic and tactical - is critical to the sustainment of power projection operations. The San Antonio Class is the functional replacement for four Classes of less capable amphibious ships equipped with 1970's and early 1980's technology, including its predecessor, the USS Austin (LPD-4) Class. Each LPD 17 has 25,000 square feet of vehicle storage space, more than the larger Wasp (LHD-1)-Class multipurpose assault ship and double that of the LPD-4. When the required twelfth ship (LPD-28) reaches the fleet, the Navy's amphibious force will have the enhanced lift it needs to support forward presence operations and successfully implement the OMFTS and STOM concepts.

The LPD 17 is the first amphibious ship designed to accommodate the Marine Corps' "mobility triad" - Advanced Amphibious Assault Vehicles (AAAV), Landing Craft Air Cushion (LCAC), and the Marine Corps' new tilt-rotor MV-22 Osprey - for high-speed, long-range tactical-lift operations. Just as "littoral" has come to mean operations that begin well "over-the-horizon" (OTH), some 600 miles from an adversary's coastline, the "mobility triad" will ensure our ability to "reach out and touch someone" 200 miles inland, at revolutionary speeds.


America's warships are designed and built to operate in harm's way. Even in peacetime, the threat of attack always lurks in the shadows. The multi-mission San Antonio Class is designed and engineered to operate either as a critical part of a group, or alone, operating forward, in hostile waters. The LPD 17 has a reduced vulnerability in the littoral environment by minimizing radar cross section signature using a streamlined topside design. Combining this significant improvement with state-of-the-art command and control, communications, computers, intelligence, surveillance and reconnaissance (C4ISR) capabilities and upgraded self-defense systems significantly improves the ship's ability to defeat airborne threats. The LPD 17 design reflects a revolutionary emphasis on shipboard survivability through an organization that will support both traditional manning and core/flex approaches, a focus on vulnerability reduction, and 21st-century survivability features. Never before has a design meshed these attributes into such a comprehensive approach to optimizing ship survivability.

Although LPD 17 is not flagship-configured, it does contain enhanced command and control features and a robust communications suite that greatly improve its ability to support embarked landing forces, Marine Air Ground Task Forces, Joint or friendly forces. The ship's Combat Information Center, Marine Tactical Logistics Center, mini-Intelligence Center, and Troop Operations command and control spaces are equipped with large screen displays and dedicated computer consoles. Removable "smart bulkheads" integrate these spaces to create synergy and the shared knowledge needed to improve operational agility. A separate mission planning space provides the assets for crisis action planning critical to Special Operations Capable missions.

The heart of the ship's defensive capability is a quick reaction Ship Self-Defense System (SSDS) that correlates sensor information, provides threat identification and evaluation, assesses own-ship defense readiness, and recommends optimal tactical defense responses against anti-ship missile and aircraft attacks in a cluttered conflict environment. Information flow will be equally state-of-the-art, as the LPD 17 is the first U.S. Navy ship to be equipped with a fiber-optic Shipboard Wide Area Network (SWAN). The SWAN connects all ship systems, combat systems, sensors, and command and control nodes with the ship's warfighting consoles to provide the essential real-time decision-making information required for fighting the ship effectively.

Employment of the "mobility triad" affords LPD 17, current ARGs, and future ESGs with an OTH maneuver capability that extends their operating range and improves threat reaction time. Highly capable air- and surface-search radar systems, the revolutionary Cooperative Engagement Capability (CEC), the Rolling Airframe Missile system, and the Mk 53 Nulka Decoy Launching System present an impressive array of self-defense capabilities. An upgrade path has been defined to accommodate future advanced radar systems for long-term horizon-search and fire-control requirements on LPD 17 in the 21st century.

The ship will carry two high rate-of-fire Mk 46 Mod 1 automated 30mm Close-in Gun System mounts. The Mk 46 provides long-range lethality while engaging small, high-speed, surface targets. The LPD 17 design also reserves space and weight for adding improvements such as a Vertical Launcher for the Evolved Sea-Sparrow Missile System to boost future capability.


The San Antonio Program has been structured to ensure seamless integration of Navy and Marine Corps assets. With the decision to involve the war fighter from the keel up, the LPD 17 Team embraced a "Design for Ownership" philosophy to interact with the fleet's operating forces - the Navy and Marine Corps operators, maintainers, and trainers who will ultimately use the ship. This unique engineering approach injected warfighter inputs into the development process early on, shaping every element of the ship's program, while simultaneously addressing the warship's fundamental functionality to fine-tune its design and meet the warfighters' needs.

The LPD 17 Program also took advantage of numerous "Smart Technologies" and optimized-manning initiatives to achieve significant cost avoidance in the operating and support costs of this 12-ship Class. Addressing manning and human-systems integration issues early in the developmental process was absolutely essential, since some 60 percent of a ship's total ownership costs - cradle-to-grave - are linked directly to its operating and support expenses. In response, the LPD 17 was designed for a significantly reduced crew size: the projected manning of 361 men and women is 14 percent less than that of the smaller and far less-capable LPD-4 ships that the LPD 17 Class replaces.

The San Antonio design reflects a focus on reducing workload. Its all-electric auxiliaries eliminate existing maintenance-intensive steam systems to achieve significant support savings by reducing crew workload over the ship's 40-year lifetime. To further reduce maintenance support requirements, corrosion-resistant materials are used throughout the ship, high solids paint is used on the well deck overhead and ballast tanks, and the ship's interior decks are covered with wear-resistant tile. The ship's design with its hull-length overboard discharges and elimination of cuppers will avoid the repeated painting of running rust down the ship's side.


The Design for Ownership approach led to changes that will enable every Sailor and Marine to focus on warfighting and associated training and less on routine facilities management and own-unit support. The LPD 17 also provides the latest quality-of-life features to help reduce some of the rigors of life at sea. Newly designed gender-neutral living spaces will have "sit-up" berths and adjacent head and lounge facilities. All crewmembers and Marines will be able to access e-mail and Internet services within their berthing spaces via the SWAN.

The SWAN also advances the art of onboard training on the LPD 17 Class. The ship's training department will employ a Total Ship Training System to develop lesson plans, conduct training, and document results. Dedicated training spaces include the Learning Resource Center and Electronic Classroom, and even the ship's chapel has been designed to convert into a Classroom. The ship is designed to support Marine training needs by providing space for an indoor simulated weapons range, as well as other weapons trainers in the well deck and vehicle stowage spaces. Crews will be able to train in their Advanced Amphibious Assault Vehicles as they interact with the ship's Battle Force Tactical Trainer.


America's naval expeditionary forces - particularly its multi-mission ARG/MEUs and future ESGs - are at the leading edge of global operations that protect important U.S. interests, allies, and friendly nations. They help maintain peace and stability in troubled regions around the world, provide the foundation for quick, effective response when crises and conflicts erupt, and are expected to be at the leading edge in the War on Terrorism.

When the first Sailors and Marines stepped onboard USS San Antonio in 2004, they brought forward a history of expeditionary operations from the sea that began more than two centuries ago. The 12 multimission LPD 17s are the foundation needed for extending that tradition of expeditionary warfare excellence well into the 21st century. (source: US Navy)

 

san antonio class amphibious transport dock line drawing

 

USS San Antonio class amphibious transport dock landing ship LPD

 

 

class details

 

lpd san antonio class amphibious transport dock landing ship us navy

 

 

USS San Antonio class LPD 17 - amphibious transport dock landing ship

 

san antonio class lpd

 

san antonio class lpd flight deck hangar

 

USS San Antonio class LPD 17 - amphibious transport dock landing ship

 

San Antonio class LPD-17 amphibious transport dock landing ship

 

san antonio class amphibious transport dock mk 46 30mm gun weapon system mk 49 launcher for rim-116 rolling airframe missile

forward Mk-46 30mm gun and Mk-49 RAM launcher

 

 

 

 

san antonio class lpd well dck landing craft utility lcu

 

 

 

 

 

san antonio class amphibious transport dock lpd well deck lcac landing craft air cushioned

 

 

san antonio class lpd flight deck ch-46 sea knight

 

 

 

a boats and crafts crane lifts a RHIB from the boat valley of USS New York

 

 

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