Navigation Light · Signaling & Visual
Sealite SL-310 Masthead is identified in the source list as a navigation light. It is mounted at the vessel position required by the approved lighting or signaling arrangement, with switching and monitoring equipment located as required by the ship design. Its purpose is to provide the visual indication, navigation signal or emergency illumination identified by the equipment category. The source record provides the existing record note 'Signaling & Visual'. The light source, lens or optic, housing, mounting, power supply and monitoring circuit form part of the approved installation. The exact model designation distinguishes light source, optical pattern, enclosure and electrical arrangement from neighboring units; refer to the approved light plan and manufacturer documentation for the exact figures.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
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What our service work and the manufacturer documentation say about keeping this model running.
Inspect the light fitting, lens, seals, mounting, cable glands and unobstructed field of view where applicable. Function-test the light and any bridge or emergency failure indication using the vessel's approved procedure. Replace lamps or modules only with approved components that preserve the intended optical and electrical performance. Check backup or emergency supply arrangements where fitted and verify labeling at the relevant panel. Prevent paint or structural changes from obstructing required sectors. Refer to the approved vessel plan and manufacturer documentation for exact installation and servicing requirements.
Keep approved replacement lamps or LED modules where serviceable, fuses, seals, cable glands and selected monitoring-panel components. Spare complete fittings may be appropriate for critical or exposed positions. Replacement parts must preserve the approved optical and electrical characteristics.
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