Marine Searchlights and Bulbs Catalog

Marine operations—whether commercial shipping, offshore drilling, fishing, or recreational boating—require dependable illumination systems to ensure safety, navigation, and efficiency. At the heart of these systems are marine searchlightsand their associated replacement bulbs, sockets, and control assemblies. Diesel Pro Power offers one of the most comprehensive catalogs of marine lighting solutions, supplying Perko and other industry-trusted brands to vessels in more than 180 countries.

Trusted by over 40,000 satisfied customers worldwide, we are proud to be the go-to source for durable marine searchlight components, designed to withstand saltwater environments, vibration, and continuous duty cycles.

Importance of Marine Searchlights

Marine searchlights are not ordinary lights. They serve critical roles, such as:

• Navigation Safety – Powerful beams illuminate channels, docks, and obstructions during night operations.

• Search and Rescue – Long-distance beam penetration aids in spotting vessels, crew overboard, and floating hazards.

• Commercial Operations – Fishing vessels, tugboats, and offshore rigs rely on strong illumination for productivity and safety.

• Compliance – Many vessels require functional searchlights to meet maritime regulations.

Because of their demanding environment, every component—bulbs, sockets, housings, and controls—must be built for rugged durability.

Marine Searchlight Bulbs

7-Inch Diameter Seal Beam Bulbs

One of the most common searchlight configurations in marine service is the 7-inch sealed beam unit. Diesel Pro Power offers both 12-volt and 24-volt versions, ensuring compatibility with different vessel electrical systems.

• 12 Volt, 100 Watt Seal Beam Bulb – Ideal for vessels with standard 12V DC systems. Compact, energy-efficient, and reliable.

• 24 Volt, 450 Watt Seal Beam Bulb – Delivers significantly higher brightness for larger vessels and professional marine use. Suitable for vessels wired to 24V power systems.

These sealed beam options are designed for straightforward replacement—simply swap out the unit without handling fragile filaments or complex wiring.

Large Diameter Marine Searchlight Bulbs

For more demanding applications, larger diameter searchlights paired with high-wattage incandescent or quartz halogen bulbs provide unmatched brightness.

• 14-Inch White Marine Searchlight (120V) – Powered by Perko, finished in durable marine-grade coatings, and engineered for wide beam coverage.

• 19-Inch White Marine Searchlight (120V, Wheel Control) – A commanding unit suitable for large vessels requiring extended beam projection and hands-on adjustability.

These units serve vessels ranging from commercial fishing fleets to government and coast guard patrol craft.

Incandescent Bulbs for Marine Searchlights

Incandescent bulbs remain a trusted standard due to their simple construction and steady illumination quality. Diesel Pro offers a range of 120V incandescent bulbs compatible with Perko searchlights:

• 1000 Watt Bayonet Base Bulb – Easy twist-lock installation, delivering high output.

• 1000 Watt Screw Base Bulb – Alternative configuration for vessels requiring screw-type fittings.

• 750 Watt Bayonet Base Bulb – A slightly lower wattage option, balancing brightness with reduced energy draw.

Quartz Halogen Bulbs

Quartz halogen bulbs are widely used in marine searchlights due to their longer lifespan and brighter light outputcompared to traditional incandescent options. These bulbs maintain consistent brightness under heavy use.

Available options include:

• 600 Watt Quartz Halogen (2-Pin Prefocus Base) – Compact power for mid-sized searchlights.

• 900 Watt Quartz Halogen (2-Pin Prefocus Base) – Higher intensity with reliable performance.

• 1000 Watt Quartz Halogen (2-Pin Prefocus Base) – A versatile option for vessels that require strong but stable output.

• 2000 Watt Quartz Halogen (Bayonet Base Type) – For heavy-duty marine searchlights requiring maximum output.

These bulbs are designed to withstand vibration and maintain reliable contact thanks to prefocus and bayonet socket designs.

Marine Searchlight Control Assemblies

A marine searchlight is only as useful as the system that controls it. Diesel Pro Power provides Perko wheel control assemblies engineered for precise beam direction and operational ease.

• 14-Inch Wheel Control Assembly – Compact control solution for 14" searchlight housings.

• 19-Inch Wheel Control Assembly – Larger, heavy-duty assembly engineered to handle the weight and torque of 19" searchlights.

Wheel control assemblies allow for smooth directional aiming, critical for navigation, docking, and search operations.

Marine Searchlight Sockets

Marine searchlight sockets are engineered for secure connections in high-vibration environments. Diesel Pro Power stocks several socket types to fit both incandescent and quartz halogen bulbs:

• Mogul Prefocus Bayonet Type Socket – Heavy-duty build, designed for high-wattage bulbs.

• 2-Pin Prefocus Socket – Ensures proper bulb alignment and reliable current flow in quartz halogen searchlights.

By maintaining proper socket integrity, operators can reduce the risk of arcing, overheating, or premature bulb failure.

Choosing the Right Marine Searchlight Components

When selecting replacement parts for marine searchlights, several factors should be considered:

• Voltage Compatibility – Match bulbs and searchlights with your vessel’s electrical system (12V, 24V, or 120V).

• Wattage Requirements – Choose the correct brightness level for your vessel’s size and operational needs.

• Base Type – Ensure bulb bases (bayonet, screw, or prefocus) match the installed sockets.

• Diameter – 7", 14", and 19" are standard marine searchlight sizes; match your housing diameter.

• Environmental Durability – Always choose marine-grade components designed for saltwater resistance.

Benefits of Choosing Diesel Pro Power

Operators worldwide turn to Diesel Pro Power because we combine comprehensive inventory, proven reliability, and exceptional service.

• Worldwide Shipping – Orders ship within 24 hours to more than 180 countries.

• Customer Trust – Over 40,000 satisfied customers rely on us for consistent quality.

• Expert Support – Our technical team helps match bulbs, sockets, and searchlight assemblies to your exact marine application.

• One-Stop Catalog – Beyond searchlights, we also supply full marine electrical and accessory systems.

Applications Across the Marine Industry

Diesel Pro’s marine searchlight catalog supports a wide variety of vessels, including:

• Commercial Shipping – Tankers, bulk carriers, and container ships.

• Fishing Vessels – Trawlers, crab boats, and squid boats requiring night operation illumination.

• Government and Military – Patrol craft, coast guard vessels, and defense ships.

• Offshore Rigs – Oil and gas platforms requiring high-power lighting for safety and operations.

• Recreational Yachts – Luxury vessels demanding reliability and aesthetics.