Navilight 360 degrees All-Round White Light 2NM with Scotty Mounting Attachment. The Navilight 360 degrees Scotty 2NM US Coast Guard approved for 2 nautical miles is fully compatible with the Scotty Deck Mounting system and includes 360 degrees All-round light, 225 degrees Masthead light, 135 degrees Sternlight, Flashing light, Anchoring light and a Cabin light. It is battery operated, uses super bright LED light, is water proof and floats. Examples of usage, based on the Convention on the International Regulations for Preventing Collisions at Sea, commonly called 72 COLREGs. On a power driven vessel underway of 12 meters or more in length but less than 50 meters in length Sternlight. All-round white light. On a power driven vessel underway of less than 12 meters in length Masthead light. Sternlight. All-round white light. On a power driven vessel underway of less than 7 meters in length whose maximum speed does not exeed 7 knots All-round white light. Rowing/Paddle vessels. The Navilight 360 degrees Scotty 2NM US Coast Guard approved for 2 nautical miles is fully compat On a power driven vessel underway of 12 meters or more in length but less than 50 meters in length . All-round white light. On a power driven vessel underway of less than 12 meters in length Masthead light. Sternlight All-round white light On a power driven vessel underway of less than 7 meters in length whose maximu