Regardless of whether you are diving at night or during the day, a flashlight is necessary because the deeper you go, the more light fades away until it becomes completely dark. However, choosing a waterproof flashlight for diving can be quite a daunting task due to the many brands available on the market. To help you, here are some of the things that you should consider when choosing a waterproof flashlight for diving.
It is recommended to use bright light especially when night or deep sea diving for maximum visibility. However, if you are diving in unclear water, using a flashlight that is too bright will be counterproductive because the light is reflected back to you by the particles in the water. In such a case, you should use a dimmer flashlight.
The type of diving determines whether you will need a tight or wide beam. A wide flood beam is ideal when lighting up a large area such as a cave or when setting up a video shoot, while a tight beam works well when looking in crevices and under ledges.
The depth rating of a flashlight should be determined by how deep you plan to dive. If you choose a flashlight with a depth rating of about 100ft, you can only use it to dive in shallower water. If you intend to go for deep dives, you will need a flashlight with at least a depth rating of 200ft
Size and Other Considerations
When diving during the day to look at the marine life, signal your friend, or look at unlit gauges, a small waterproof diving flashlight that can fit in your pocket is the best choice.
For night dives where you do not need to use your hands, a canister light will work well. But if you need to use your hands, look for a light that you can wear on your mask strap or head.
Another factor to consider is whether the flashlight uses rechargeable or disposable batteries. Neither is a better option – it all depends on your preference. If you spend many hours diving, carry a spare set of batteries and store them separately.