What you don't know about US warships in the Vietnamese Navy.

Along with the 501 and 505 tank landing ships, the Vietnamese Marine Corps also uses LCM landing craft manufactured in the United States.

After 1975, the Vietnam People's Army seized several types of landing craft from the South Vietnamese Navy. The most numerous of these were the LCM-8 and LCM-6 landing craft.

The LCM-8 class small motorized landing craft is 22.26m long and 6.4m wide. The LCM-8 can carry a maximum of over 50 tons of cargo or one M48 (M60) tank and 200 soldiers.

Thanks to its compact size and efficient, flexible operation in shallow waters, the LCM-8, despite being quite old, is still used in the navies of many countries around the world today.

The 501st Tanker of the Vietnamese Navy.

The LCM-6 class of small motorized landing craft, manufactured by the United States since 1924, has a full-load displacement of 64 tons, is 17.1m long, and 4.3m wide. The vessel is equipped with two 12.7mm machine guns. The LCM-6 can carry a maximum of over 34 tons of cargo or motorized vehicles, or 80 soldiers.

But most notable among these were two massive LST-491 and 542 landing ships. After 1975, the Vietnam People's Army captured and commissioned two of them, designated 505 (formerly USS Bulloch County, known as HQ-504 Qui Nhon by the South Vietnamese Army) and 501 (formerly USS Maricopa County, known as HQ-501 Da Nang by the South Vietnamese Army).

Before 1975, the South Vietnamese Army had six LSTs with hull numbers 500, 501, 502, 503, 504, and 505. HQ-505, belonging to the LST-491 class, was used by the US Navy in the Normandy landings.

On April 8, 1970, the ship was donated to the Republic of Vietnam Navy and given the new name Quy Nhon, with the hull number HQ-504.

The LST-491 class ships, manufactured by the United States, have a full-load displacement of 3,698 tons, are 100m long, and 15m wide. They are equipped with two GE 12-567 diesel engines, allowing them to reach a maximum speed of 22km/h.

The ship is capable of carrying over 140 soldiers, tanks, armored vehicles, and two infantry landing craft (LCVP). The LST-491 class ships are equipped with one 76mm naval gun, eight 40mm guns, and twelve 20mm guns. The deck is capable of accommodating a light helicopter.

Ship 501, belonging to the LST-542 class, is essentially the same as the LST-491 class but with a slightly lower full-load weight of approximately 3,640 tons, and a reduced crew of 100.

While serving in the Vietnamese Navy, LSTs actively participated in transporting goods to remote islands and protecting maritime sovereignty. In particular, ship 505 participated in the 1988 operation to protect the sovereignty of the Spratly Islands.

Ship 501 is still in active service with our navy today and remains the "most monstrous gaping maw" in the Vietnam People's Navy.

However, maintaining the operation of these vessels has been very difficult due to a lack of spare parts. Currently, only the LCM-8 and LST-542 vessels remain operational.

To remain operational to this day, the LCM-8 and LST-542 vessels have undergone numerous improvements and upgrades by the Vietnamese Navy.

According to Baodatviet