DWS305/3NM is a 3NM solar marine navigation lantern specially designed for the navigation safety of the non-powered seagoing vessels such as Barge, Dredger or Tug boats etc.. It complies with COLREGS (1972), UL 1104 and EN 60945(2002). It has the characteristics of solar self-contained, durable, anti-UV & easy-installation and can be controlled by a remote controller if necessary. The light can be easily installed on vessels without cable and professional training.