A personal flashlight is a must-have if you are doing any nighttime sailing, but using one that is waterproof and has a strobe function makes it a safety device as well. One problem with many pocket-size lights is that they are too bright for use on deck. You may have to try out several before you find a light you love, but the waterproof Navisafe Navi mini LED light has white and red LEDs as well as a strobe light in a 2.5 inch by 1.5 inch package. $26, www.defender.com