The　stabilization　of　an　underactuated　surface　vessel　is　studied.　Environmental　disturbances　are　taken　into　account.　By　using　global　diffeomorphism　transformation,　the　plant　is　transformed　to　an　equivalent　cascaded　system.　By　defining　a　Lyapunov　function　and　introducing　two　auxiliary　controllers,　a　robust　feedback　control　strategy　is　proposed　to　stabilize　the　obtained　equivalent　system.　Simulation　is　conducted　to　verify　the　proposed　stabilization　controller.　©　2019　IEEE.