Section 11.501 - Grades and types of national engineer endorsements issued(a) National engineer endorsements are issued in the grades of-(2) First assistant engineer;(3) Second assistant engineer;(4) Third assistant engineer;(5) Chief engineer (limited);(6) Assistant engineer (limited);(7) Designated duty engineer;(8) Chief engineer uninspected fishing industry vessels;(9) Assistant engineer uninspected fishing industry vessels;(10) Chief engineer (MODU);(11) Assistant engineer (MODU);(12) Chief engineer (OSV); and(13) Assistant engineer (OSV).(b) Engineer endorsements issued in the grades of chief engineer (limited) and assistant engineer (limited) of steam, motor, and/or gas turbine-propelled vessels allow the holder to serve within any propulsion power limitations on vessels of unlimited tonnage on inland waters and of less than 1,600 GRT in ocean, near-coastal, or Great Lakes service in the following manner: (1) Chief engineer (limited) may serve on oceans and near-coastal waters.(2) Assistant engineer (limited) may serve on ocean and near-coastal waters.(c) Engineer licenses or MMC endorsements issued in the grades of designated duty engineer of steam, motor, and/or gas turbine-propelled vessels allow the holder to serve within stated propulsion power limitations on vessels of less than 500 GRT in the following manner:(1) Designated duty engineers limited to vessels of less than 1,000 HP or 4,000 HP may serve only on near-coastal or inland waters.(2) Designated duty engineers-unlimited may serve on any waters.(d) An engineer officer's license or MMC endorsement authorizes service on steam, motor, or gas turbine-propelled vessels or may authorize all modes of propulsion.(e) A person holding an engineer license or MMC endorsement that is restricted to near-coastal waters may serve within the limitations of the license or MMC upon near-coastal, Great Lakes, and inland waters.