Top Marine Electrical & Electronics for Larger Boats in Largo, FL

Finding reliable Marine Electrical & Electronics service in Largo, FL is critical when your vessel depends on navigation systems, shore power, and onboard electronics to perform safely. The pros on this list cover everything from wiring diagnostics to full electronics installations, with several carrying decades of experience on the water. If you own a larger boat or yacht, request a free quote from a qualified local contractor below.

By Boatwork in Largo, FL·9 pros·321 lists by this author·May 31, 2026
9 pros
Markey's Marine Services logo

Markey's Marine Services

4.5(96)
(786) 829-6081Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & ElectronicsBottom Painting & Antifouling

About Markey's Marine Services

Boat owners throughout the Upper Florida Keys have relied on Markey's Marine Services for comprehensive vessel care since the company established its facility on the Overseas Highway in Key Largo. With more than 30 years of specialized experience in Mercury sales and service, the business has built a reputation for...

What others are saying about Markey's Marine Services

When it comes to engine repairs and Mercury outboard service, Markey's Marine Services demonstrates strong technical expertise with mechanics who can quickly diagnose issues and get boats back on the water, often within the same day. On the customer...

Reviews sourced from Google

My ThoughtsMarkey's Marine Services covers Marine Electrical & Electronics alongside engine repair, fiberglass work, and bottom painting — a broad skill set backed by 30+ years in business and a 4.5-star rating across 96 reviews.
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LeBoeufs' Marine logo

LeBoeufs' Marine

4.8(61)
305-998-4390Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & Electronics

About LeBoeufs' Marine

Serving the Upper Florida Keys from their location on the Overseas Highway in Key Largo, LeBoeufs' Marine has established itself as a comprehensive marine service facility combining boat sales, engine repair, and full-service marina operations. The family-owned business has earned a 4.8-star Google rating from more than 60 reviews, reflecting...

What others are saying about LeBoeufs' Marine

When it comes to emergency repairs and engine service, LeBoeufs' Marine consistently delivers for boaters on vacation in Key Largo, with customers praising their ability to quickly diagnose and fix everything from Suzuki outboard issues to overheatin...

Reviews sourced from Google

My ThoughtsLeBoeufs' Marine focuses on Marine Electrical & Electronics and engine repair, earning a strong 4.8-star rating from 61 reviews — one of the higher review-volume scores on this list.
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Keys Marine Service logo

Keys Marine Service

5.0(33)
1-786-914-5293Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & Electronics

About Keys Marine Service

Mobile boat repair throughout the Florida Keys requires both technical expertise and an understanding of the region's unique saltwater challenges. Keys Marine Service delivers comprehensive marine maintenance and engine repair from their Key Largo base, serving boat owners from Tavernier south to Marathon with on-site service that eliminates the need...

What others are saying about Keys Marine Service

Known for their mobile dockside service throughout the Florida Keys, Keys Marine Service has built a reputation around Jayce's exceptional mechanical expertise and unwavering reliability. Time and again, customers describe how this team goes above an...

Reviews sourced from Google

My ThoughtsKeys Marine Service holds a perfect 5.0-star rating from 33 reviews, offering Marine Electrical & Electronics and engine repair with 6+ years serving the area.
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Dawson Marine Services logo

Dawson Marine Services

4.8(73)
1-305-924-5332Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & Electronics

About Dawson Marine Services

Operating from a well-equipped facility in Key Largo, Dawson Marine Services has built a reputation as a go-to marine repair shop for boat owners throughout the Upper Florida Keys. Their 4.8-star rating across 72 Google reviews reflects consistent performance in an area where saltwater takes a toll on every component...

What others are saying about Dawson Marine Services

From electronics troubleshooting to engine diagnostics on Suzuki and Honda outboards, reviewers highlight Dawson Marine's ability to quickly identify and resolve complex marine issues. Customers frequently mention their responsive service calls, with...

Reviews sourced from Google

My ThoughtsDawson Marine Services carries a 4.8-star rating from 73 reviews — the largest review count among the five-star-range contractors here — specializing in Marine Electrical & Electronics and engine repair.
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Chris Carson's Marine Service logo

Chris Carson's Marine Service

4.6(67)
1-800-329-2725Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & Electronics

About Chris Carson's Marine Service

Family-owned and operated since its founding, Chris Carson's Marine Service has built a solid reputation among boat owners throughout the Upper Florida Keys for comprehensive marine repair and maintenance solutions. The shop's location on the Overseas Highway in Key Largo positions their team to serve recreational boaters, commercial fishermen, and...

What others are saying about Chris Carson's Marine Service

From complete Yamaha HPDI rebuilds to custom reed valve manufacturing, reviewers highlight Chris Carson's Marine Service's expertise with 2-stroke outboard engines and specialized components like fuel injectors. Customers frequently mention the team'...

Reviews sourced from Google

My ThoughtsChris Carson's Marine Service brings 42+ years of experience in Marine Electrical & Electronics and engine repair, with a 4.6-star rating earned across 67 reviews.
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Certified Diesel logo

Certified Diesel

4.5(10)
1-305-509-7424Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & ElectronicsGenerator Service & Repair

About Certified Diesel

Operating from Key Largo since the early 1970s, Certified Diesel brings more than five decades of marine diesel expertise to boat owners throughout the Upper Keys, Islamorada, and Monroe County. The company was founded by Nolin E. Jackson with a focus on delivering specialized marine diesel solutions, and that technical...

What others are saying about Certified Diesel

Customers repeatedly praise Certified Diesel for their exceptional emergency service and parts availability, with multiple reviews highlighting their ability to source hard-to-find components quickly and provide after-hours support. The reviews make...

Reviews sourced from Google

My ThoughtsCertified Diesel adds Generator Service & Repair to its Marine Electrical & Electronics and engine work — a relevant combination for larger vessels — with 55+ years in business and a 4.5-star rating from 10 reviews.
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G.P.T Marine logo

G.P.T Marine

5.0(6)
1-786-283-1472Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & ElectronicsFiberglass & Gelcoat Repair

About G.P.T Marine

Operating from a facility on the Overseas Highway in Key Largo, G.P.T Marine serves boat owners throughout the Upper Keys with a comprehensive range of marine repair and maintenance services. Their team of experienced technicians handles everything from routine engine maintenance to complex mechanical overhauls, working with all major marine...

What others are saying about G.P.T Marine

G.P.T Marine stands out as a reliable choice for boat owners who value straightforward service and fair pricing. The reviews make clear that their team, particularly mechanic Yosiel, has built a reputation on honesty and transparency in an industry w...

Reviews sourced from Google

My ThoughtsG.P.T Marine carries a perfect 5.0-star rating and covers Marine Electrical & Electronics alongside fiberglass repair and marine plumbing, offering multi-discipline capability in one contractor.
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SD Marine Group logo

SD Marine Group

5.0(1)
1-786-982-7722Key Largo, FLGet Directions
Key Largo, FLBoat Mechanics & Engine RepairMarine Electrical & ElectronicsBottom Painting & Antifouling

About SD Marine Group

Operating from their facility on the Overseas Highway in Key Largo, SD Marine Group delivers comprehensive marine services to boat owners throughout the Florida Keys and Monroe County. Their waterfront location provides convenient access for vessels ranging from small center consoles to large cruising yachts, with the team addressing the...

My ThoughtsSD Marine Group specializes in Marine Electrical & Electronics, engine repair, and bottom painting, currently holding a 5.0-star rating based on 1 review — a newer profile on Boatwork.
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1C

1st Class Marine

305-417-0300Key Largo, FLGet Directions
Key Largo, FLMarine Electrical & ElectronicsFuel PolishingMarine Plumbing & Sanitation

About 1st Class Marine

Boat owners throughout the Upper Florida Keys rely on specialized marine services that understand the demanding saltwater environment, and this Key Largo facility has built its reputation on addressing the unique challenges vessels face in South Florida waters. Operating from their location at 99240 Overseas Highway, 1st Class Marine serves...

My Thoughts1st Class Marine is new to Boatwork with no reviews yet, but lists Marine Electrical & Electronics, Fuel Polishing, and Marine Plumbing & Sanitation — a service combination worth noting for larger boat owners.
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