Landing Craft Utility (LCU)

 LCU 1634 Power Plant: 2-Detroit 12V-71 Diesel engines, twin shaft, 480 hp sustained, Kort nozzles.
Length: 135 feet (41.1 meters)
Beam: 29 feet (8.8 meters)
Displacement: 200 tons (203.21 metric tons) light; 375 tons (381.02 metric tons) full load.
Speed: 11 kts (12.7 mph, 20.3 kph)
Range: 1200 miles at 8 knots
Capacity: 170 tons (172.73 metric tons)
Military Lift: 125 tons of cargo/2 M1A1 tanks/400 combat-equipped troops Crew: 11
Guns: 4-.50 cal, 2-M60, 1M203 grenade launcher, 12-M16s, 2-9mm Pistols
Radar : Navigation: LN 66 or SPS-53; I band.

The mission of Landing Craft is to transport material, troops, and equipment to shore. The use of landing craft in amphibious assaults dates from World War II on through to the Korean Conflict. In 1968, Assault Craft Unit ONE was formed by combining Assault Craft Squadron ONE and Assault Craft Divisions 11, 12 and 13. Its mission was to deliver combat troops and cargo from ship to shore. Over the last 34 years, the Assault Craft Unit One "Surf Riders" have executed that mission with distinction in Vietnam and Somalia and have proudly served in a myriad of real world missions and exercises including OPERATION Desert Storm, OPERATION Enduring Freedom, and OPERATION Iraqi Freedom. During the Vietnam War, four Assault Craft Unit ONE Sailors received the Silver Star for their heroic actions in combat.

Assault Craft Unit ONE is located on Naval Base Coronado, Coronado California. Amphibious Construction Battalion ONE, Beachmaster Unit ONE, and Assault Craft Unit ONE comprise the three commands of Naval Beach Group ONE. Today, and together, these units support the operational concept of Sea Basing by accelerating expeditionary deployment and employment timelines and by prepositioning vital strategic supplies and equipment. LCU 1646

Specifically, Assault Craft Unit ONE performs the expeditionary mission by expediting the closure of troops and materiel to the shore by using LCUs, and in 2008, by using the Replacement LCU. In addition, LCM 8 boats facilitate the offload of strategic supplies, materiel, and equipment. By 2005, the introduction of the MPF Utility Boat will greatly enhance the strategic offload mission. There are 33 LCUs in the Navy today. Assault Craft Unit ONE has 12 LCUs in Coronado, California and 4 LCUs forward deployed to Sasebo Japan. Assault Craft Unit TWO in Little Creek, Virginia has 17 LCUs.

These battle-tested craft average 40 years of age. They are 135 feet long and 29 feet wide. The maximum cargo capacity is 168 tons. They carry 2 M1A1 tanks or 350 combat equipped troops. The maximum speed is 12 knots. The craft are capable of 10 days of self-sustainment with a 1200-mile operational range (without fueling) at eight knots. The craft has a crew of 11 including a Craft master, who is a Chief Petty Officer (E-7), or a First Class Petty Officer (E-6).

There are eight LCM 8 boats at Assault Craft Unit ONE and they average 30 years of age. They are 73 feet long and 21 feet wide. The maximum cargo capacity is 60 tons or 150 combat equipped troops. The LCM 8 has a maximum speed of 10 knots and has a crew of four. The operating range is 190 miles at nine knots .