New amphibious amphibious US Marine Corps: interesting, but uncomfortable and unreliable

The Pentagon's Main Testing Agency (DOTE) has given mixed reviews to the Amphibious Combat Vehicle (ACV) program for the US Marine Corps. Conclusion: in general, it has a number of advantages over the previous model, but it is not reliable enough.

The ACV is intended to replace the AAV amphibian, which has been in service with the Marine Corps for more than 40 years. ACV with a crew of three will be able to deliver 13 marines ashore, or take part in a raid through enemy territory.

ACV has several major differences from AAV. The main thing, perhaps, is the replacement of the tracks with 8 x 8 wheels. It also has more modern and reliable armor, which includes protection against improvised explosive devices (IEDs).

The ACV's cruising range is 520 km with one gas station, which is 40 km more than that of the AAV. The advantage in speed is 105 km / h versus 70 km / h, also in favor of ACV.

Amphibious Combat Vehicle (ACV)

The main disadvantage of the new amphibian is its low operational reliability. With a planned MTBF of 69 hours after testing, it was 39 hours. The largest number of failures occurred in the Remote Weapon System (RWS), a remotely controlled weapon station that fires a 50-caliber machine gun or 40-mm grenade launchers from inside the vehicle. There are complaints about some suspension components, sunroof and ramp sensors, as well as switches.

Tire failures were also recorded, leading to two-hour standstills while waiting for the tow truck - due to the incredibly large size of the tires, the crews were unable to replace them on their own.

Standing in service amphibious model AAV

Ergonomics also let down. The location of the armor elements makes it difficult for the Marines to board and exit the amphibian, which can have tragic consequences in an emergency. So, in August 2020, as a result of the emergency flooding of the AAV, only seven out of fifteen Marines managed to escape. The DOTE report also mentions the seats in the rear of the amphibian, which were not dimensioned for soldiers in body armor.

Amphibious Combat Vehicle (ACV)

From the good news: during the tests, the ACV was able to successfully complete 12 of 13 tests, and in one of the missions the crew managed to launch the amphibious vehicle, overcome almost 20 km in the open sea, cross the surf zone and continue moving towards the intended target.

However, none of these problems affected the conclusion of the contract with the customer. Otherwise, replacing the AAV could drag on for another decade.