USNS Puerto Rico (HST-2)

The USNS Puerto Rico (HST-2), standing for High-Speed Transport, formerly named Alakai, is a vessel currently owned by the United States Maritime Administration. It was originally the Hawaii Superferry's first high-speed ferry. In the Hawaiian language, alakai means "sea path." It should not be confused with the similar word alakaʻi, which means "leader."
The design of the Spearhead-class Joint High Speed Vessel is 70 percent in common with the Hawaii Superferries, both built by Austal USA.

Vessel

Alakai is a 349-foot (106 m) long high-speed roll-on / roll-off (Ro/Ro) passenger and vehicle ferry formerly operated by Hawaii Superferry. It used to operate a daily service at a speed of 35 knots (65 km/h) between the islands of Oahu and Maui. Alakai has a capacity of 866 passengers and up to 282 subcompact cars. Alternately, its vehicle decks can be reconfigured in 5 minutes to carry up to 20 large trucks and 90 cars.

Like its sister ship Huakai, the vessel features environmentally friendly technologies including non-toxic bottom paint, zero wastewater discharge and clean diesel engines.