OBC Detection, Lighting & Power case studies
OBC Detection, Lighting & Power · Put your knowledge to work in context.
The Outboard Detection, Lighting & Power credential (often shortened to OBC DLP) certifies that a candidate can install, maintain, and troubleshoot the exterior electrical systems of a vessel or outboard-equipped platform: detection sensors and their coverage, lighting circuits and luminaires, power distribution and circuit protection, wiring methods and terminations, grounding and bonding, and inspection and fault diagnosis. It suits marine electricians, boatyard technicians, systems integrators, and surveyor-adjacent personnel who already have basic DC electrical knowledge and want formal recognition in the outboard/exterior systems niche. The OBC Detection, Lighting & Power case studies are 5 cases and about 2,967 words.
1Radar and AIS Overlap on a Night Approach
A 24 m workboat approaches a harbour entrance at night in light rain. The X-band radar is set to 3 NM range with gain at 55 percent and sea clutter at 40 percent.
643 words, about 3 min2Mixed Lighting Circuit on a Pontoon
A floating pontoon has a 230 V shore supply feeding a consumer unit with a 30 mA RCD. The lighting circuit serves six LED bollard luminaires rated 12 W each, two 150 W halogen floodlights, and a 300 W transformer-fed strip of 12 V deck lights.
607 words, about 3 min3DC Distribution Fault on a Small Vessel
A 12 m vessel has two 12 V lead-acid batteries in parallel, a 60 A alternator, and a distribution panel with blade fuses. The owner adds a 600 W inverter and a 40 A DC-DC charger.
608 words, about 3 min4Terminations in a Wet Pump Room
A pump room below the waterline contains a 400 V three-phase pump motor, a 230 V control circuit, and several sensor cables. The cables are run in galvanised conduit that is damp and shows white corrosion at joints.
563 words, about 3 min5Intermittent Earth Fault on a Marina Feeder
A marina feeder protected by a 100 mA RCD at the origin nuisance-trips at random, mostly at night and in wet weather. The feeder supplies eight pedestals, each with a 30 mA RCD, and has a total leakage that reads 18 mA with all loads off but pedestal isolators closed.
546 words, about 3 min