Scotty Sea Light w/ 20" extended pole. The intense incandescent light is visible for up to two miles depending on weather conditions. The lens simultaneously focuses a beam of light straight ahead and a ring of light is present all around.
Runs up to 8 hours on 2 AA batteries. Removable light is portable and can be attached to a life jacket.
This unit is waterproof and corrosion resistant with a twist On/Off control that can be operated by gloved hands and in poor weather conditions. $50