The LCVP or Higgins Boat, was designed by Andrew Higgins in the 1930's. Starting developemental life as a rampless boat with machine gun positions fore, the Marine Corps began to show interest in Higgin's design, after frustration with the Navy Bureau of Construction and Repair's failure to meet Marine requirements. Marine testing of this original Higgins boat yielded satisfactory results, and it went into service as the Landing Craft, Personell (Large) or LCP(L).
Marine and Navy scrutiny of Japanese Daihatsu class landing craft, with retractable forward ramps, in 1937 led to Higgins redesigning his landing craft. The fore machine guns present in the LCP(L) were moved to the sides to create a path of egress out of the newly installed ramp. This new ramp however, was not full width, and concerns were voiced about it being a bottleneck for troops deploying from the craft(Designated LCP(R) for ramped).
A subsequent redesign in the face of these concerns resulted in the fore machine gun positions being moved aft, and full width ramp being installed. With the addition of the full size ramp, vehicles could now be loaded, and unloaded with ease. This new, final variant of Higgins' design was designated LCVP for Landing Craft, Vehicle, Personnel.
Prior to 1.43, the LCVP was a vulnerable, small non-playable unit that normally appears in large numbers. It was very weak, with little armor and only 1 machine gun for defence, and it was easily destroyed by machine guns.