Full-scope yacht electrical services
From the shore power inlet to the last LED, Prism Marine Electric covers the complete ship's electrical system on yachts and superyachts in Fort Lauderdale, Broward, Palm Beach and Miami-Dade. Every service below is delivered by marine electricians who work on yachts daily — high voltage and low voltage, diagnosed by measurement, documented for surveyors and insurers.
Get an estimate now for any service on this page
Tell us the vessel, system and symptom — we'll scope it, price it and schedule it.
Power Generation, Protection & Distribution
The backbone of the vessel: generator output, shore power inlets, transfer gear, main switchboards, breakers, busbars and branch distribution. We trace, test, repair and rebuild the systems that carry every amp on board.
- Shore power inlets, cordsets and Magnus-style shore power systems
- Main switchboard and sub-panel repair, rebuild and labeling
- Breaker, contactor and transfer switch replacement
- Generator electrical output, AVR and paralleling faults
- Battery banks, chargers, inverters and DC distribution
- Load balancing, harmonics and voltage drop correction
Control Systems & Automation
Pumps, thrusters, HVAC, hydraulics and machinery all depend on control circuits. We troubleshoot and rebuild relay logic, PLC-based cabinets, VFD drives and operator interfaces so equipment starts, stops and protects itself the way it was designed to.
- Relay logic and terminal strip troubleshooting
- PLC cabinet diagnostics and rewiring
- VFD installation and configuration (Schneider, ABB)
- Start/stop stations, interlocks and safety circuits
- HMI and touchscreen control replacement
- As-built drawing updates and cabinet labeling
Alarm & Monitoring Systems
Monitoring only helps if it's accurate. We repair and expand bilge, high-water, tank level, temperature, pressure and machinery alarm systems, verify every sensor and make sure the annunciator tells the truth at 3 a.m.
- Bilge and high-water alarm repair and testing
- Tank level, temperature and pressure sensing
- Machinery and engine room alarm circuits
- Annunciator panel repair and relabeling
- Remote and cabin-side alarm repeaters
- End-to-end functional testing and documentation
Fire Alarm Systems
Fire detection is the system a surveyor looks at hardest. We service detection loops, control panels, sounders and the shutdown interlocks tied to ventilation and machinery, then leave you with documented test results.
- Fire alarm control panel service and fault clearing
- Smoke, heat and flame detector testing and replacement
- Loop wiring repair and end-of-line correction
- Sounder, beacon and repeater circuits
- Fan, damper and machinery shutdown interlocks
- Written functional test records for survey
Class Survey Support (5, 10, 15 & 20-Year+)
Class surveys carry a long electrical scope: insulation resistance testing, hull potential and bonding checks, protection settings, emergency systems, labeling and documentation. We prepare the vessel ahead of every periodical survey — 5-year, 10-year, 15-year and 20-year-plus — attend with the surveyor and close out electrical findings quickly.
- 5, 10, 15 and 20-year-plus periodical survey preparation
- Pre-survey electrical audit and punch list
- Insulation resistance and continuity testing
- Hull potential and bonding verification
- Thermal imaging of panels and switchgear under load
- Protection device verification and settings review
Buyer & Seller Survey
Pre-purchase and pre-sale electrical inspections that go past the panel door: cable condition, terminations, grounding and bonding, corrosion, past modifications and the real cost to bring systems to standard.
- Full electrical condition inspection, high and low voltage
- Grounding, bonding and galvanic corrosion assessment
- Termination, support and chafe inspection in voids
- Load testing of batteries, chargers and inverters
- Documentation of prior modifications and shortcuts
- Written report with prioritized costs
Navigation Lighting Systems
Masthead, sidelight, stern, anchor and NUC lighting — correctly rated fixtures, sound mast and rail wiring, and monitoring so a failed light is known before a boarding officer finds it.
- Navigation light fixture replacement and compliance review
- Mast, rail and radar arch wiring repair
- Nav light failure monitoring and alarm panels
- Switch panel and circuit protection correction
- Sealing, drainage and corrosion prevention at fixtures
- Underway functional verification
LED Lighting Systems
LED retrofits and new installations across the interior, decks, engine room and underwater lights, with dimming and control that doesn't flicker, buzz or drop out.
- Halogen to LED retrofit with correct drivers
- Interior, deck, engine room and courtesy lighting
- Underwater and hull lighting circuits
- Dimmer, driver and control system correction
- Color temperature matching across spaces
- Emergency and egress lighting compliance
Shore Power Systems
Shore power is where the vessel meets the dock, and where most heat damage starts. We service inlets, cordsets, isolation and conversion equipment, transfer gear and the protection behind it — with Magnus shore power systems as our preferred solution.
- Shore power inlet and cordset replacement
- Magnus shore power system supply and installation
- 50Hz/60Hz and voltage conversion equipment support
- Isolation transformer and galvanic isolator work
- Automatic and manual transfer switch service
- Dockside supply verification and load balancing
Battery Service, Load Testing & Replacement
Battery banks fail quietly until the day they don't crank. We load test 12V and 24V systems, evaluate charging and DC distribution, and replace banks — lead acid, AGM, gel or lithium — with correct cabling, protection and mounting.
- Battery load testing and capacity verification
- 12V and 24V battery bank replacement
- Lead acid, AGM, gel and lithium bank installation
- Charger, alternator and inverter charging diagnostics
- Starting, house, emergency and thruster bank service
- DC distribution, fusing, shunts and monitoring
VFDs & Harmonic Analysis / Mitigation
Variable frequency drives on chillers, pumps, thrusters and stabilizers inject harmonics that make lights flicker and equipment misbehave. We install and configure drives (Schneider, ABB) and carry out harmonic analysis and mitigation to clean the system up.
- VFD installation, replacement and parameter configuration
- Schneider and ABB drive support
- Harmonic analysis and power quality measurement
- Harmonic filter, reactor and mitigation solutions
- Shielded motor cable and correct EMC glanding
- Drive fault diagnosis and thermal management
Grounding, Bonding, Hull Potential & Corrosion
Stray current and grounding faults eat metal fast. We carry out hull potential surveys, trace ground faults, verify bonding systems and correct the wiring causing galvanic and electrolytic corrosion.
- Hull potential survey and reference cell readings
- Ground fault detection and tracing
- Bonding system inspection, repair and continuity testing
- Galvanic isolator and isolation transformer verification
- Anode assessment and stray current source isolation
- Insulation resistance testing across AC and DC systems
Galley, Laundry & Appliance Wiring
New cooktop, convection oven, dishwasher, washer or dryer? We read the equipment specs, run the correctly sized feeder, add and label the breaker, and commission the circuit — the electrical support side of any galley or laundry retrofit.
- Appliance load assessment from manufacturer specs
- New power feeder runs and cable routing
- Breaker addition, panel space and protection sizing
- Galley and laundry retrofit electrical support
- Dedicated circuits for cooktops, ovens, washers and dryers
- HVAC and equipment feeder runs for other trades
Underwater Lighting
Underwater lights live in the harshest place on the boat. We install and replace them per manufacturer specification, repair their circuits and controls, and fix the sealing and bonding issues that shorten their life.
- Underwater light installation to manufacturer spec
- Fixture replacement and through-hull sealing
- Driver, dimmer and color control circuits
- Circuit protection and cable routing correction
- Bonding and corrosion protection at fixtures
- Function and thermal-cutout testing
Electrical Troubleshooting & Fault Finding
The calls nobody else wants: the breaker that trips at 2 a.m., the circuit that works until it's hot, the fault three technicians couldn't find. We work high and low voltage from the print with real instruments until the cause is identified.
- Intermittent fault and ground fault tracing
- Insulation resistance and continuity testing
- Thermal imaging of panels, breakers and terminations
- Voltage drop and load analysis under real conditions
- Circuit tracing and as-built drawing correction
- General maintenance and preventative inspections
Work we refer out
Prism is a marine electrical company. We don't take on the following, and we'll tell you before you book so nobody wastes a day. Where we can, we'll recommend a specialist we trust.
- Bridge navigation electronics (radar, plotters, autopilots)
- Audio, video and entertainment systems
- Generator and engine mechanical rebuilds
- Generator rigging, removal and reinstallation
- Factory-authorized warranty work on proprietary systems
- Product-specific service for brands like Crestron or CMC
- Dealer or distributor sales — we don't rep or sell products
Not sure which department your problem belongs to? Call 954-210-4010 and we'll help you figure it out.
Call now — 24/7 marine electrical response
Fort Lauderdale based, serving Broward, Palm Beach and Miami-Dade. Free estimates, licensed and insured.
Electrical problem on board? Talk to a marine electrician.
Call and describe the fault — you'll speak with a technician who works on yacht electrical systems every day, not a call center.
Licensed & insured · All yards & marinas