This Night Maneuvers Regatta of the Sea Scout Division, Boston Council was held on October 13, 1939 in Boston Harbor.  Commemorative cachets on envelopes were printed as souvenirs of the event.  The stamps were canceled in black by a hand cancellation.

This cachet is printed in black and signed by Acting Captain L.A. Lavess Jr. of the Sea Scout Ship Commodore Clark.

This cachet is printed in brown and signed by Captain R.H. Brown of the Sea Scout Ship Spindrift II.