Hobbs marine lamps are completely weatherproof. They are totally sealed against moisture ingress, and the mounting hardware is stainless steel to prevent rust and corrosion. The housing is shock resistant and can withstand up to 6 G's vibration. Both flood and spot versions are available to meet your lighting requirements. The flood pattern illuminates an area 80x wide by 30x long and the spot pattern projects a narrow beam of light up to 1000' these lights are 12V. Works for 4 x 6 applications such as: Shrimp & fishing boats, Off-shore oil riggs, Ocean vessels, Barges, Dry dock lighting, Freighters, tankers, etc., Pleasure craft, Anywhere a corrosion resistant lamp is needed.