Maryland Labor and Employment Section 8-210
§ 8-210.
  (a)   Except as provided in § 8-202(d)(2) of this subtitle, employment performed by a crew member or officer of a vessel on the navigable waters of the United States is not covered employment if the vessel has a capacity of 10 net tons or less.
  (b)   Employment is not covered employment if:
    (1)   performed by a crew member or officer of:
      (i)   a vessel with a capacity of 10 net tons or less; or
      (ii)   a fishing boat that has a crew that normally consists of fewer than 10 individuals;
    (2)   the crew member or officer is engaged in the farming or taking of any aquatic life; and
    (3)   the crew member or officer is paid on a share basis and not by a salary.