The Boston Marine Society (established 1742) is a charitable organization in Boston, Massachusetts, formed "to 'make navigation more safe' and to relieve members and their families in poverty or other 'adverse accidents in life.'" Membership generally consists of current and former ship captains. The society provides financial support to members and their families in times of need; and also actively advises on maritime navigational safety such as the placement of lighthouses and buoys, and selection of Boston Harbor pilots.