# Commercial Marine Electrician Long Beach | Work Boats | Long Beach Marine Electric > Commercial marine electrician for Long Beach and LA Harbor work boats, charter and sportfishing vessels. Downtime-first scheduling, written findings. Call today. URL: https://longbeachmarineelectric.com/commercial-marine-electrical/ Upgrade · Free estimate # Commercial Marine Electrician for Long Beach & LA Harbor Vessels Work boats, charter and sportfishing boats, crew boats and harbor vessels. Faults traced fast, repairs documented for inspections, and scheduling built around your trips. [Call (562) 374-7233](tel:+15623747233) [Get a Free Estimate](/contact/) ![Marine electrician crimping wires at an open switchboard on a commercial vessel, with port cranes outside](/images/photos/marine-electrician-wiring-commercial-vessel-switchboard-938.webp) - Work boats & charter vessels - 12V, 24V & 32V DC systems - 120/240V & three-phase AC - 46 CFR Part 183 (Subchapter T) - ABYC E-11 practices - Same-day callback Last updated: October 20, 2026 [Long Beach Marine Electric](/) connects vessel owners, operators and port engineers with a licensed, insured commercial marine electrician for the boats that work out of Long Beach and the LA Harbor: charter and sportfishing boats, crew and supply boats, harbor and utility vessels, and other work boats. Commercial electrical work is mostly about downtime. A boat that can't sail loses a trip, a charter or a contract, so the job starts with fast fault-finding and ends with written findings you can hand to an inspector, an insurer or the next crew. ## What happens on the first visit 1. A briefing with the owner, captain or port engineer: the fault, the vessel's schedule, recent work, and any electrical drawings or one-lines on board. 2. Fault-finding with a meter, clamp meter and voltage-drop testing on the affected circuits, starting with the systems that keep the boat from sailing. 3. A check of charging sources, battery banks, shore power and generator transfer, because most commercial outages trace back to one of them. 4. Notes on anything an inspector or surveyor is likely to flag: overcurrent protection, chafe, unsupported runs, non-marine components. 5. A written finding and a price, or a time-and-materials plan for complex troubleshooting, before repair work starts. ## Commercial vessels in Long Beach and the LA Harbor Long Beach and the neighboring Port of Los Angeles form one of the busiest port complexes in North America. The Port of Long Beach alone moved about 9 million twenty-foot container units in the first eleven months of 2025. Around that cargo traffic works a fleet of smaller commercial boats: sportfishing and charter boats running out of the landings, crew and supply boats, pilot and harbor vessels, and work boats that support the terminals. Those boats run long hours in salt water and spray, and their electrical systems wear out faster than a weekend boat's. ## Inspected vs uninspected vessels Which rules apply depends on how the vessel is certificated. Small passenger vessels under 100 gross tons that the Coast Guard inspects fall under 46 CFR Subchapter T, and their electrical installation is governed by **46 CFR Part 183**, which covers power sources and distribution, lighting, and other electrical systems. Uninspected commercial vessels, such as many six-passenger charter boats, are usually built and maintained to ABYC standards, with E-11 covering AC and DC systems. On an inspected vessel, electrical changes can affect the vessel's approved plans and its Certificate of Inspection. Check with the cognizant Coast Guard office before modifying an inspected vessel's electrical system, and keep the written findings and invoices from every repair. ## The faults that take commercial boats out of service 1. **Charging failures.** An alternator, regulator or battery charger that stops charging drains the house and start banks over a long day. 2. **Corroded connections.** Spray and constant vibration loosen and corrode terminals, bus bars and crimps, causing intermittent faults that come and go with the sea state. 3. **Overloaded circuits.** Electronics, bait-tank pumps, lighting and galley loads added over the years, often on circuits never sized for them. 4. **Shore power and generator transfer faults.** Tripping pedestals, hot inlets, and transfer switches that don't fully isolate sources. 5. **Chafed wiring.** Cables rubbing through where they pass bulkheads and engine rooms, which is a fire risk and a common survey item. ## Insurance, warranty and who pays Commercial work is billed to the vessel owner or operating company. Troubleshooting is usually billed hourly at $140–$200/hr in Long Beach, and defined repairs and projects are priced in writing. Larger jobs can be scheduled in phases around the vessel's trips. Every job ends with written findings for the vessel's records, inspections and insurer. ## What's included - Fault-finding on AC and DC systems - 12V, 24V and 32V DC systems - Alternators, regulators and battery chargers - Battery banks and switching - Shore power and generator transfer - Rewiring of chafed or undersized circuits - Navigation lights and deck lighting - Written findings for inspections and insurers ## Quick fix vs proper commercial vessel electrical work DIY Cheap operator Proper marine work Fault-finding Swap parts until it works Replace the obvious part Meter and voltage-drop testing to the root cause Wiring Whatever is on hand Automotive wire Tinned marine cable, sized for load and run length Protection Often missing Fuse sized to the load Overcurrent protection sized to the wire Chafe and support Ignored Tape over the damage Re-routed, supported and protected through bulkheads Inspections Flagged Often flagged Built to the applicable rules, documented Records None Invoice only Written findings for owners, inspectors and insurers ## Related resources - [Marine Survey Electrical Findings: What They Mean and How to Fix Them](/guide/marine-survey-electrical-findings/) - [ABYC Electrical Standards: What They Require and Why Your Boat Is Measured Against Them](/guide/abyc-electrical-standards/) - [How Much Does a Marine Electrician Cost in Long Beach? (2026)](/guide/marine-electrician-cost/) ## Sources - [46 CFR Part 183: Electrical Installation (Cornell LII)](https://www.law.cornell.edu/cfr/text/46/part-183) - [Global Trade: Port of Long Beach 2025 cargo volumes](https://www.globaltrademag.com/port-of-long-beach-eyes-record-2025-cargo-volume-after-strong-year/) Vessel down before a trip? Call for a same-day callback. Urgent faults that keep a boat from sailing are prioritized. [(562) 374-7233](tel:+15623747233) Mon–Sat 7am–6pm · Free estimate within 24 hours Standards applied - 46 CFR Part 183 (small passenger vessels) - ABYC E-11 (AC & DC systems) - NEC 555.35 (marina GFPE) - Tinned marine-grade cable [Estimate your cost](/tools/marine-electrical-cost-estimator/) How it works ## How commercial marine electrical works 1. 01 ### Call with the vessel's schedule Tell us the boat, where it's berthed, what failed and when it next needs to sail. Same-day callback. 2. 02 ### Fault-finding on board Testing starts with whatever keeps the boat from sailing, then the rest of the system. 3. 03 ### Written price, then repair A fixed price or time-and-materials plan, scheduled around trips and charters. 4. 04 ### Test and document Systems are re-tested underway or at the dock, with written findings for your records. Get commercial marine electrical at your slip today Same-day callback. Written price before any work. [Call (562) 374-7233](tel:+15623747233) [Get a Free Estimate](/contact/) Straight answers ## Commercial Marine Electrical questions ### Do you work on commercial and charter vessels, not just pleasure boats? Yes. Calls from this page go to a commercial marine electrician who works on charter and sportfishing boats, crew and supply boats, harbor vessels and other work boats in Long Beach and the LA Harbor. ### Can repairs be scheduled around our trips? Yes. Tell us when the vessel next has to sail. Urgent faults are prioritized, and larger repairs can be split into phases between trips. ### Does work on an inspected vessel need Coast Guard approval? It can. Inspected small passenger vessels follow 46 CFR Part 183 for electrical installations, and changes may affect approved plans and the Certificate of Inspection. Check with the cognizant Coast Guard office before modifying an inspected vessel's electrical system. ### What does commercial marine electrical work cost? Troubleshooting typically runs $140–$200 an hour in Long Beach. Defined repairs are quoted in writing after the electrician sees the vessel. See the [marine electrician cost guide](/guide/marine-electrician-cost/) for how jobs are priced. ### Who does the work, and how do I know they’re qualified? Long Beach Marine Electric is a free service that connects you with an independent, licensed and insured marine electrician who holds the American Boat & Yacht Council (ABYC) Marine Electrical Certification. Ask your electrician for proof of license and insurance before work starts. ## Related services [Yacht Electrical Systems50A and 100A 240V service, generator transfer switches, isolation transformers and digital switching on 40 ft+ yachts.](/yacht-electrician/) [Boat RewiringAging automotive wire replaced with tinned marine cable, new AC/DC panels and labeled circuits, built to ABYC E-11.](/boat-rewiring/) [Marine Electrical InspectionPre-purchase electrical checks and repairs for the electrical items your surveyor or insurer flagged, measured against ABYC.](/marine-electrical-inspection/) Get a commercial marine electrician on board [Call (562) 374-7233](tel:+15623747233) [Get a Free Estimate](/contact/)