10 Best Marine Flashlights 2025 in the United States

The OLIGHT Seeker 4 Pro is a robust choice for anyone needing a powerful marine flashlight. Its standout feature is the impressive brightness of up to 4600 lumens with a beam distance reaching 260 meters, which is excellent for spotting objects or navigating in dark waters. The flashlight is IPX8 waterproof rated, meaning it can handle being submerged in water, making it reliable for marine use or emergencies. The aluminum build adds good durability while keeping weight reasonable at about 1.28 pounds. This weight is manageable but might feel slightly heavy if you plan to carry it for long times.

Its size is compact enough (just over 5 inches long) to be convenient without compromising on performance. The included holster is multifunctional, offering safe carrying, charging via USB-C, and flexible mounting options, which is handy on boats or when camping. Charging is made easy with two methods: USB-C through the holster or magnetic charging with an accessory, adding convenience. Another user-friendly touch is the enlarged side switch that can be operated even with gloves, plus hidden brightness and battery indicators to keep you informed without affecting waterproofing.

If you prioritize extreme brightness, solid waterproofing, and versatile carrying for marine or outdoor activities, this flashlight is a strong fit. However, if you prefer a lighter or smaller flashlight for casual use, this model might feel a bit bulky.

The Streamlight 66134 Stylus Pro USB is a compact and powerful flashlight that is well-suited for various outdoor activities, including marine use. With a waterproof rating of IPX4, it can handle splashes of water, which is beneficial for marine environments, though it may not be fully submersible. Its 350 lumens provide bright illumination with a peak beam intensity of 2950 candela, reaching a distance of 109 meters, making it effective for spotting objects from afar.

The flashlight is constructed from durable anodized machined aircraft aluminum, ensuring it can withstand harsh conditions. Weighing just 1.76 ounces and measuring under 6 inches in length, it's lightweight and easy to carry, fitting well in pockets or small bags. The inclusion of a rechargeable lithium-ion battery and a USB cord adds convenience, allowing for quick recharging without the need for replacement batteries.

There are some drawbacks to keep in mind. The runtime on high mode is limited to just 1.5 hours, which may not be ideal for extended outings unless you have a way to recharge it. Additionally, while the sliding metal sleeve protects the USB port, users need to ensure it's properly sealed to maintain water resistance. The flashlight also does not come with standalone lithium batteries.

The OLIGHT Baton4 Premium Edition is a compact yet powerful flashlight offering a bright 1,300 lumens output and a beam distance of 170 meters, which is useful for spotting things clearly in marine environments. It has a strong waterproof rating (IPX8), meaning it can handle being submerged in water, a crucial feature for boating or fishing. Its runtime is about 190 minutes on a full charge, which might be enough for typical outings but could require recharging for extended trips. The flashlight is designed for durability with an aluminum body, making it resistant to bumps and drops. Weighing just under 15 ounces and roughly 3.5 inches long, it is easy to carry without feeling bulky.

The Baton4 stands out with its handy magnetic base and two-way clip for secure, hands-free mounting on metal surfaces or clothing, which is great for tasks on deck. Charging is convenient via USB-C, and the included charging case can hold power for up to 190 days, adding flexibility for prolonged trips. Battery life and brightness levels are clearly indicated through built-in indicators, so you always know when to recharge. One limitation is that the battery is not removable, so you rely on onboard charging. Also, while its runtime is decent, heavier users or longer marine excursions might need to plan for recharging.

This flashlight is well suited for boaters, campers, or anyone needing a reliable, waterproof light that's easy to carry and mount, although it may not replace larger, longer-lasting marine-specific lights for extended use.