Henderson Marine Engineering

What Henderson Marine Engineering does

Henderson Marine Engineering, operating under the legal entity Henderson Marine Supply, Inc., is a privately held wholesale distributor of marine and dock supplies founded in 1984 and headquartered in Petaluma, California. The company supplies a comprehensive catalog of physical marine products — including buoys (Jim-Buoy, Polyform, Rolyan), shore power electrical distribution systems (Eaton pedestals, substations, transformers, panels, Smart Start kiosks), dock hardware, cleats, dock bumpers, flotation equipment, firefighting and life-safety equipment, pump-out stations, winches, ladders, gangways, non-slip coatings, and watercraft (RIBs) — to commercial marina operators, dock builders and marine contractors, and private dock owners across the United States. Its proprietary in-house product line carries the Henderson brand, most notably the UHMW pile roller assembly developed in 1976, the Henderson 503 and 504 cleats, the H Series dock bumpers, Henderson Dock Coating non-slip paint, and Henderson Marine Flotation Attachment Devices.

The business operates a wholesale B2B distribution model with quote-based volume pricing as the primary revenue mechanism, supplemented by direct-to-consumer sales for select items such as the Dri-Diver hull cleaner ($224.95-$249.95 per unit). Henderson functions primarily as a curated multi-brand resale channel, holding distribution agreements with Eaton Marina Power and Lighting, Thern, Jim-Buoy, Polyform, Rolyan, MARINCO, 3M, Edson, and DOW Chemical, while selectively manufacturing or branding its own Henderson-marked products. Sales are conducted via toll-free phone, email, and a request-a-quote website flow with no documented digital marketing, e-commerce transaction capability, or e-commerce platform.

The company is founder/family-owned and operated with a headcount of 1-10 employees, no disclosed outside funding, no parent company, no subsidiaries, and no documented M&A activity across its ~40-year history. It has no proprietary software, API, or technology platform beyond its product catalog and request-a-quote web presence, and operates exclusively within the contiguous US domestic market.

Name

Henderson Marine Engineering

Legal name

Henderson Marine Supply, Inc.

Website

https://hendersonmarine.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

1–10 employees

Short description

Henderson Marine Engineering is a Petaluma, California-based wholesale distributor of marine and dock supplies serving marinas, dock builders, and private dock owners across the US since 1984, with a ~40-year catalog of branded and OEM-resold hardware, shore power, flotation, and safety products.

Ownership category

akta.pro rank

Product category

Marine and Dock Supplies Distribution

SIC

Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)

akta.pro primary industry

Water Sports & Marine Recreation Gear Distribution (CRAOAJAD)

akta.pro secondary industries

Marine Parts, Accessories & Maintenance Supplies Retail (CRAMAIAB), Docking, Anchoring & Mooring Equipment Retail (CRAMAIAI), Marine Safety & Navigation Electronics Retail (PFDs, EPIRBs, GPS, VHF) (CRAMAIAH)

Keywords

• Marine dock supplies
• Marina equipment wholesale
• Dock hardware distribution
• Shore power systems
• Marine flotation products

Headquarters

HQ city

Petaluma

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Wholesale Marine Supply Distribution: Long-established wholesale company selling marina and dock supplies. Revenue is generated through bulk product sales to commercial marina operators, dock builders, and marine contractors. Individual retail purchases are secondary. Volume discounts incentivize larger orders.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Henderson Marine Engineering (Henderson Marine Supply, Inc.) is a wholesale distributor of marina and dock supplies, offering a comprehensive catalog of marine hardware, dock hardware, flotation products, shore power electrical distribution systems, safety equipment, coatings, and marina infrastructure equipment. The company sells its own Henderson brand products (cleats, dock bumpers, pile rollers with UHMW plastic technology, and non-slip dock coatings) alongside distributed lines from manufacturers such as Eaton Marina Power and Lighting, Thern, Jim-Buoy, Polyform, Rolyan, MARINCO, 3M, Edson, and DOW. Customers are primarily commercial marina operators, dock builders, and marine contractors purchasing via quote-based wholesale orders, with limited individual retail availability for select consumer items.

Product overview

Henderson Marine Supply is a wholesale marina and dock supplies company serving marinas, dock builders, and private dock owners for nearly 40 years. The company offers a comprehensive portfolio of physical marine products organized into several categories: (1) Navigation and Safety Equipment including buoys (Jim-Buoy, Polyform, Rolyan brands), life rings, life vests, and oil sorbent products; (2) Shore Power Electrical Distribution systems including Admiral SS, Lighthouse, Hatteras Light, Newport Harbor Mate, Seaworthy, Dockmaster, and Mega Yacht Powerpoint power pedestals, transformers (single and three-phase up to 500 KVA), substations, panels, and Smart Start billing kiosks; (3) Dock Building and Maintenance products including dock hardware, cleats, bumpers, dock boxes, pile caps, pile rollers (developed with UHMW plastic technology), gangways, ladders, dock carts, and corner wheels; (4) Flotation Equipment including Superfloat drums, cross-linked polyethylene pontoons, STYROFOAM buoyancy billets, and Sport Port lifts; (5) Fire Fighting Equipment including fire extinguishers, hose cabinets, and firehouse pedestals; (6) Marina sanitation equipment including diaphragm, peristaltic, and vacuum pump out stations; (7) Boat maintenance products including Dri-Diver hull cleaning devices and non-slip paints; (8) Rigging products including chain, rope, and winches/cranes; and (9) Watercraft (RIBs). The company also offers Dock in a Box complete dock systems and The Dock Manual publication. Most products are sourced from established manufacturers like Eaton Marina Power and Lighting, Jim-Buoy, Thern, and Polyform.

Differentiator

Problem solved

Functional benefit

Products and services

• Buoys (Jim-Buoy, Polyform, Rolyan)

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Eaton Marina Power and LightingcoreChannel Partner/ Reseller/ DistributorHenderson Marine distributes Eaton Marina Power and Lighting products including power pedestals (Admiral SS, Lighthouse, Newport Harbor Mate, etc.), substations, transformers, panels, and Smart Start kiosks for marina electrical distribution.
• TherncoreChannel Partner/ Reseller/ DistributorDistributes Thern winches, cranes, and hoists for marine applications including hand winches, power winches, and davit/floor cranes.
• DOW ChemicalminorChannel Partner/ Reseller/ DistributorDistributes DOW STYROFOAM brand buoyancy billets for pontoon flotation, with over 40 years of product history and established water absorption performance data.
• Jim-BuoycoreChannel Partner/ Reseller/ DistributorDistributes comprehensive Jim-Buoy product line including buoys (barrier, boom, mooring, sombrero, regulatory), navigation lights, rope floats, life floats, life rings, life preservers, and work vests.
• PolyformcoreChannel Partner/ Reseller/ DistributorDistributes Polyform mooring buoys.
• RolyancoreChannel Partner/ Reseller/ DistributorDistributes Rolyan buoys including barrier buoys, can buoys, and lighted buoys.
• MARINCOminorChannel Partner/ Reseller/ DistributorDistributes MARINCO shore power systems.
• 3MminorChannel Partner/ Reseller/ DistributorDistributes 3M brand oil sorbent products for oil spill control and cleanup on water bodies.
• EdsonminorChannel Partner/ Reseller/ DistributorDistributes Edson pump-out equipment including diaphragm, peristaltic, and vacuum pump systems for marina sewage collection.

Scale indicators1 record

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Edson International: Marine equipment manufacturer of pump-out, steering, and related systems whose products Henderson distributes. Comparable as a principal/supplier relationship and as a broader industry incumbent in marina sanitation equipment.
• Eaton (Marina Power and Lighting): Diversified industrial manufacturer whose Marina Power and Lighting division is both a Henderson supplier and a broader industry incumbent in shore power, transformers, and marina electrical systems. Relevant comparable as a principal whose channel strategy directly affects Henderson's positioning.

Direct peers

• Imtra: U.S. distributor of marine equipment including hardware, lighting, and marina-related products serving boat builders, yards, and dealers. Comparable wholesale distribution model and product mix to Henderson, particularly in shore-power-adjacent categories.
• Defender Marine: Wholesale and retail marine supplies distributor with deep catalog in hardware, electronics, and dock/marina products. Closely comparable to Henderson's wholesale-led model and product breadth, with stronger digital/e-commerce presence.
• Wholesale Marine: Online marine supply wholesaler focused on volume pricing for boat owners, dealers, and marine businesses. Closely comparable to Henderson in wholesale pricing motion and customer overlap in the dock and hardware categories.
• Fisheries Supply: Long-established Pacific Northwest marine supply distributor serving commercial marine operators, government, and boatyards. Comparable to Henderson in B2B distribution focus, multi-decade history, and broad marine hardware and dock/marina product lines.
• West Marine: The largest U.S. marine supplies retailer and distributor, carrying a broad catalog across dock hardware, shore power, safety, and rigging. Most direct comparable to Henderson in product mix and customer overlap with marinas and boaters, though materially larger and consumer-tilted.
• Jamestown Distributors: Marine supply distributor focused heavily on boat builders, dock builders, and marine contractors with a broad catalog of hardware, coatings, flotation, and dock components. Directly comparable to Henderson's dock-builder customer base and product categories.

Regional players

• Top Marine / iMarine Supply: Regional marine supply distributors operating in overlapping marine hardware and dock/marina categories, comparable in scale and product breadth to Henderson but anchored to specific coastal geographies.

Emerging players

• Boat Outfitters: Online retailer/distributor specializing in aluminum dock hardware, lift parts, and marine accessories. Compares to Henderson's dock-hardware niche with a more focused, digital-first catalog and growing share among dock builders.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/henderson-marine-supply

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Henderson Marine Engineering