Finnish Border Guards are procuring an new class of Offshore Patrol Vessel (OPV). It is fairly large at 96 meters long and 17 meters beam (315’x56′) and ice strengthened, but the most unique aspect of the design is that it is designed to use both conventional diesel and Liquified Natural Gas (LNG) as fuel. Picture and more here.
The Norwegians are also planning duel fueled OPVs, three ships of the slightly smaller Barentshav Class.
Descriptions seem to indicate that while the Norwegian ships have separate engines for diesel and LNG, the engines on the Finnish ship apparently will be able to burn either diesel or LNG.
Not only is LNG more environmentally friendly, the US is well endowed with natural gas.