2025 MJM 42' _{(12.80 m)} 4

AVAILABLE SUMMER 2025.

Available with twin 440HP diesel Volvo Panta DPI sterndrives or twin mercury 600 HP outboards. The twin 600's push her well above 50 MPH thanks to our market-leading post-cured Epoxy infusion composites process and advanced hull geometry. This creates a lighter stronger yacht that uses wave energy for stability, requires less horsepower, and is more efficient.the 4 is the most versatile, efficient, and capable express open bow day yacht.

She features 4 social zones and a galley-up layout protected by the MJM indoor/outdoor pilothouse. Below deck features a large v-berth, a yacht-sized head with a glass-enclosed shower, and a double berth amidships. Whether entertaining or on a weekend cruise, this truly all-weather/all-conditions capable performance yacht will guarantee comfort and fun for your family and friends.

Manufacturer Provided Description

MJM Yachts are world-renowned for their timeless style, high-tech construction, and superior materials. The MJM 4 is an impressive day yacht featuring 4 social zones and a galley-up layout. Below deck features a large v-berth as well as a double berth amidships. With the protection of an indoor/outdoor pilothouse, innovative spacious layout, and exceptional stability, she is all about style, comfort and fun.

Hull

• Modified deep-V hull with sharp entry, 3.5:1 Length to Beam Ratio, dual lifting strakes, chine flats and 19-degree deadrise
• Engineered to ISO (CE Mark) Category B (OB) Ocean
• Hull topsides in acrylic urethane yacht paint, color of choice w/2 coats of clear
• Metallic, custom paint and/or added stripes are subject to additional charges
• Infused, vacuum bagged and post cured, epoxy composite with stitched biaxial E-glass and closed-cell foam core
• Solid keel, stem, and transom corners of E-glass/epoxy GRP
• High density core or solid FRP at thru-hull and hardware attachments points
• Side & transom entry doors onto cockpit sole (2)
• Bilges painted with smooth, gloss-white epoxy paint
• PVC guardrail and 1/2 round SS rub rail

Deck

• Infused, vacuum bagged and post cured, epoxy composite with stitched biaxial E-glass and closed-cell foam core
• Insignia white gelcoat deck w/sand- textured non-skid
• Power Opening Forward Windshiels
• Retractable swim ladder
• G-10 backing plates for deck hardware
• 316L SS handrails on corner posts, hardtop, bridgedeck, seat backs, console and companionway entrance
• Cockpit guardrail, bow rail and bridge handrail of 1.25” 316L stainless and burgee staff for 16” hoist
• 3’x5’ National flag with teak staff and retainer pin
• Lewmar anchor windlass with deck and helm controls
• Auto-launching polished SS Ultra Anchor w/ rode of 250' - line and 25' SS High T ensile Chain
• Freshwater anchor and rode washer control at helm
• Polished stainless steel anchor guard
• "Downeast Style " integrated pilothouse with sliding safety glass. Aft enclosed with roll-up curtain, electrically operated forward opening windows
• Side deck drains divert dirt and dew overboard
• Storage lockers, 3 in bow seats, 1 in pilothouse settee, 1 aft cockpit
• Clear Awlwood finished teak storage drawers w/locks
• Machinery space access hatches (2) with scuppers, overboard drains, gaskets and lockdowns. Main hatch has electric operated lift. Access ladder on OB
• Dual position 36x16 single-leaf teak table opens to 32” wide
• Pilothouse settees and cockpit seating w/Spradling covered open- cell foam cushions that convert to 78 inch berths
• Drink holders strategically located around bow and throughout
• Panoramic cabin window (port)
• Companionway with safety catch and lock
• Panoramic hull window (stbd)
• Razeto & Cazareto silhouette polished mirror cleats
• Hot/cold deck shower with Keji II Continuum flow mixer and shower head

Electrical

• 12V DC system with breaker switches and digital OLED voltmeter
• 120VAC shore power system with 50 foot, 50 amp cord and Glendinning power cord retractor
• Batteries: (3) Victron 220Ah AGM house batteries (660Ah total) with dedicated Group 27 start battery for each engine
• 115A Alternators with OB OR 125A Alternators with IB
• Blue Seas automatic charging relays
• Combination Victron Charger/Inverter with 5000w inverter capacity,
• 200A charger, and automatic transfer switch
• All domestic and machinery space lighting is LED
• LED courtesy lights in cockpit and head
• LED navigation and anchoring lights
• Dimmable, LED rope lighting in galley
• 12V, 120V, & USB A/C charging ports throughout
• Bonded electrical system with Galvanic Isolator
• Serviceable wiring, bundled & numbered with Deutsch O-ring waterproof connectors
• Designed and wired to ABYC standards

Head

• Stbd side head, separate shower stall
• Corian counter with white Corian sink with faucet
• Paneled cherry storage locker outboard with sliding doors and towel storage shelf above
• Full-length mirror inside door
• Locker under sink w/stainless toilet paper holder T owel rings and hooks
• Overhead vent hatch with screen/shade
• Wall mounted shower hose w/turnoff
• Towel rings and hooks
• Tecma Toilet with 39 gallon holding tank and high level warning indicator

Plumbing

• Pressure hot/cold water with Johnson Aqua Jet Duo variable- speed water pressure pump
• 13 gallon Isotherm water heater (with shorepower or genset)
• 90 (2x45) gallon fresh water tank capacity
• Seagull IV drinking water purification filter system
• Hot/cold shower on swim platform
• High-pressure fresh water (washdown in port cockpit locker w/50’ hose & nozzle)
• 2000 GPH bilge pumps with high water alarm
• Electric, fresh water toilet system with 39 gallon holding tank w/ pump
• out and macerator discharge
• Gray water sump w/inspection for shower, head, and AC condensate
• Marelon seacocks with oversized strainers and double-clamped hose 

Galley

• Corian countertops
• Cherry cabinetry with soft-close doors, drawer slides, push-button locks and drawer handles
• Recessed Corian sink with TBD pullout faucet
• Flatware & utensil drawers (3) w/organizer tray
• Stainless 5.5 cu. ft. 2-drawer refrigerator
• Indel B153 Freezer compartment w/2 ice trays
• Under counter storage locker for large pots/pans and cleaning supplies
• Flip lid access panel to large Rubbermaid trash bin
• Overhead safety handrail and towel drying bar
• Summit 2-burner induction cooktop
• Microwave/Convection Oven combo

Main Cabin

• Large fixed hull ports (2), skylight hatches (2) and cabin portlights (2) to maximize ventilation, space and light
• Companionway is designed for safety with stainless grab rails and only 2 steps w/shoe locker & tool storage under
• Headroom of 6’4” on centerline
• High-gloss finished teak & wenge cabin sole with storage compartment
• Hand selected American cherry paneling and trim
• Foam backed Headliner 
• Fixed 78”x 60” island berth. Memory foam mattress covered in durable, water resistant quilted Sunbrella
• Paneled cherry, below-berth storage drawers (4)
• Stainless double-hooks for clothing
• Osculati Sans-Souci Nauta door handles
• Osculati flush lock cabinet pulls