Portable Navilight 360 degrees 2NM White. The Navilight 360 degrees 2NM US Coast Guard approved for 2 nautical miles is the most versatile light of Navisafes range of battery operated portable navigation lights and includes a 360 degrees All-round light, 225 degrees Masthead light, 135 degrees Sternlight, Flashing light, Anchoring light and a Cabin light. It uses super bright LED light, is waterproof, floats and attaches almost anywhere through its double magnetic mounting system. Examples of Usage *Based on the Convention of the International Regulations for Preventing Collisions at Sea. 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 exceed 7 knots All-round white light. Rowing The Navilight 360 degrees 2NM US Coast Guard approved for 2 nautical miles is the most versatile *Based on the Convention of the International Regulations for Preventing Collisions at Sea. On a pow 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 w