Builder · Field Guide

MJM

Founded by Bob Johnstone with naval architect Doug Zurn, MJM brings a performance-sailor's obsession with lightness, efficiency, and handling into a Downeast-style powerboat line built in North Carolina.

MJM has always had a slightly different accent than the rest of the Downeast world. It is not just a lobsterboat romance, and it is not merely a luxury dayboat. The brand begins with Bob Johnstone, founder of J/Boats, bringing a sailor's understanding of efficiency, balance, and clean running surfaces into the powerboat category. With Doug Zurn on design, MJM turned the Downeast silhouette into something lighter, faster, and more owner-operable.

The first MJM 34z launched in the early 2000s and set the tone: narrow by modern express-boat standards, epoxy-composite in construction, and drawn around the belief that less weight can make a boat better in almost every operating sense. MJM's official timeline describes the company as established in 2002 and the first 34z launch in 2003. The brand then expanded through the 40z, 50z, outboard models, and a later manufacturing move to Washington, North Carolina.

For an ICW News buyer, the most useful MJM story is not simply speed — it is confidence. The builder talks heavily about pilothouse visibility, C5 composite construction, owner-friendly controls, reduced weight, and efficient performance. That matters on the ICW because many buyers want a boat that can do real miles without feeling like a floating condo or a high-strung sport machine.

The support story should be read carefully. MJM publishes a dealer locator, a contact page, and customer-service details, and its official schema lists Seolta Holdings, LLC and a Washington, North Carolina manufacturing move. Public annual production is not disclosed, so the page does not imply a boats-per-year figure.

The MJM story is not just about going faster. It is about making speed feel controlled, efficient, and comfortable enough that owners use the boat more often.

⁂What Sets Them Apart

—Performance-boat lineage from Bob Johnstone and J/Boats rather than a pure motor-yacht origin.

—Doug Zurn Downeast design language paired with modern composite construction.

—A public emphasis on pilothouse comfort, visibility, and confidence.

—A North Carolina manufacturing story with a specific Washington, NC move.

—A luxury cruiser that can be written as practical, not just aspirational.

⁂Manufacturing Signature

Hull form

A light, narrow performance Downeast hull (Doug Zurn) — efficiency and composed handling at speed

Construction

C5 vacuum-infused, post-cured epoxy composite construction

Power

Efficient performance with a protected pilothouse helm; inboard and outboard eras

Certifications

The MJM 40z reached ISO Category A Ocean Certification per the official timeline

⁂Hull Lineage

2002

MJM established.

2003

First MJM 34z launches (per the official timeline).

2009

MJM 40z reaches ISO Category A Ocean Certification.

2017

The outboard era begins with the MJM 35z.

2019

Manufacturing shifts to Washington, North Carolina.

2025

The official timeline describes a new interior direction.

⁂Current Models

Current Production

38R

A high-end American express cruiser — C5 composite, an enclosed helm, and shallow running draft.

Profile coming

⁂Support Map

Factory

Designed and built in Washington, North Carolina (a 2019 vertical-integration move); a dealer locator plus direct customer service.

Parts & manuals

Ask which hull, deck, and interior components are MJM-specific versus vendor-standard, and how C5 composite repairs should be handled. unverified

Dealers, reps & service

U.S. (locator)

MJM dealer network

A dealer locator plus direct contact; confirm coverage by your intended cruising region.

Before you sign

Buyer's due-diligence checklist

The questions a serious owner-operator should put to this builder before a deposit — the ones a glossy brochure tends to skip. Carry them into the conversation.

→Ask for the current dealer/service map by region, especially East Coast and Great Loop stops.

→Ask which hull, deck, and interior components are MJM-specific versus vendor-standard.

→Ask how C5 composite repairs should be handled and which yards are approved.

→Ask for current engine, generator, steering, joystick, and electronics service partners.

→Ask for owner references for boats used as serious coastal cruisers, not just dayboats.

⁂The ICW Read

For the ICW and coastal buyer, MJM belongs in the Atlas because it solves a real modern problem: how to combine shelter, finish, pace, and owner confidence without moving into a heavy, slow, or crew-dependent platform.