The IPVs were based on a  search-and-rescue vessel class built by Tenix for the Philippine Coast Guard. The vessels had a 340-ton displacement, and were  long. They were only fitted with 12.7 mm machine guns instead of the 25 mm guns fitted to the other Project Protector ships.
The IPVs originated from a search-and-rescue vessel class designed by Tenix for the Philippine Coast Guard. These vessels weighed 340 tons and measured in length. They were fitted with 12.7 mm machine guns, unlike the other Project Protector ships which had 25 mm guns.