law: 41. Deserting post and neglect of duty.
  Every person subject to naval law, who,
  (a) deserts his post; or
  (b) sleeps upon his watch; or
  1[(c) fails to perform or negligently performs the duty imposed on him; or]
  (d) wilfully conceals any words, practice or design tending to the hindrance of the naval service; shall be punished with imprisonment for a term which may extend to two years or such other punishment as is hereinafter mentioned.