The USNS Guam (T-HST-1) is a high-speed, roll-on/roll-off (Ro/Ro) passenger vessel developed from the Spearhead-class expeditionary fast transport design. Originally built as the Huakai for Hawaii Superferry by Austal USA in Mobile, Alabama, construction commenced in 2007 and was completed in September 2008. The vessel measures 373 feet (114 meters) in length and features a distinctive design with a bi-fold ramp installed on the stern, making it 19 feet longer than its sister ship, USNS Puerto Rico. Its length and design enable it to carry up to 866 passengers and 282 subcompact cars, making it a significant high-speed transport capable of rapid deployment. The vessel incorporated environmentally friendly technologies, including non-toxic bottom paint, zero wastewater discharge systems, and clean diesel engines, reflecting a focus on sustainable maritime operation. Despite its completion, the ship's intended service in Hawaii was canceled due to the abrupt shutdown of Hawaii Superferry, and it was laid up along with its sister ship, Alakai. In 2009, Hawaii Superferry abandoned Huakai and Alakai, which were later auctioned in September 2010 for $25 million each. The U.S. Department of Transportation’s Maritime Administration acquired them, and by January 2012, both vessels were transferred to the U.S. Navy under the Defense Authorization Act of 2012. Renamed USNS Guam (from Huakai) and USNS Puerto Rico (from Alakai) in 2012, these vessels were adapted for military use. Guam, specifically, was modified to replace the chartered Westpac Express in Okinawa in March 2013, serving as a fast transport platform to facilitate troop and equipment movement between operational areas. This vessel’s maritime significance lies in its dual heritage as a high-speed commercial ferry and a military asset, exemplifying adaptable naval logistics and rapid deployment capabilities.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.