New Listing – 2016 Seaward MY-42


CE Category-A, long-distance, all-weathers semi-displacement explorer yacht. Semi-custom build by Seaward, based on the legendary and well-proven TT Boats Designs Nelson 42 Mk II hull. Utterly unique and without peers in this growing market space.


Launched in the Autumn of 2016 as a semi-custom build for an experienced Seaward Nelson boat owner, BOUNDER was explicitly configured for long-distance all-weather cruising. Her initial ‘shakedown’ cruise saw her travel up to Bergen, Norway, and the Baltic, where her iconic TT Boat Designs hull shape, economic semi-displacement cruising from her twin Cummins QSB engines, Humphree Active Ride system, and Quick gyroscopic zero-speed stabiliser ensured absolute comfort and security whether underway or at anchor.

The Seaward MY-42, sharing the same Nelson 42MkII-derived hull form as vessels used by pilots, harbour masters, navies, and enforcement agencies, stands out in sea-keeping. Its rarity is further highlighted by its CE Category-A (Ocean) certification, a feature seldom found on motor yachts of this size. BOUNDER combines these exceptional sea-keeping abilities with luxurious interiors, featuring a spacious owner’s cabin layout, large forward cabin, lower dinette/saloon, and bright & airy upper saloon areas, making her perfect for a broad range of duties ranging from luxurious long-distance cruising for a couple, through to superyacht tender work for high-latitudes adventures.

Pages could be written about BOUNDER’s unique features and abilities, but Dave Marsh of Motor Boat & Yachting Magazine summed her up beautifully by concluding, “There are the pretenders, the boats with blue hulls and chunky trawler-like styling that only appear to be serious seagoing boats. And then there are boats like the Seaward MY-42, which truly can venture forth any time in any weather. The 42 is the real McCoy.”

BOUNDER’s specification highlights include:-
• CE Category-A (Ocean)
• TT Boat Designs semi-displacement hull form with central keel protecting stern gear from grounding
• GRP hull with heavy-duty rubber fendering
• Integral stern platform moulded into the hull so that the running length of the hull is maximized, further improving ease of powering, trim, handling and sea kindliness.
• Coppercoat antifouling system
• Treadmaster zero-maintenance side decks
• Flexiteak zero-maintenance aft cockpit and bathing platform
• Twin Cummins QSB inline 6-cylinder 425hp diesel engines with shaft drive, digital dash display and electronic throttles
• Bronze rudders
• Sleipner Sidepower proportional speed bow and stern thrusters
• Humphree Interceptor Active Ride control trim system
• Quick MC2X 16K AC Anti-Roll zero-speed gyroscopic stabiliser.
• Empirbus NXT CAN-bus power networking and distribution with Seaward Yacht control digital touch-screen switching screen.
• 24vDC domestic circuits with recently-replaced batteries
• Victron Quattro 200A automatic battery charger with integral 8,000w inverter
• Cummins Onan 8MDKBW 8kVa 220vAC diesel generator
• Raymarine navigation instruments with twin HybridTouch screens at helm, open-array radar scanner, AIS transponder, wind, speed and depth transducers with i70 multi-repeaters, auopilot with rotary control head and aft mooring camera integration to plotter screens
• Teak interior joinery throughout with light satin-varnish finish
• Alcantara upholstery
• Corian and Avonite countertops
• Flexiteak flooring with carpeting in upper deckhouse
• Quooker boiling water tap supply at galley
• GN Espace OceanChef stove plus Miele microwave
• Twin large-capacity top-opening fridge/freezers, front draw-opening stainless steel fridge and dedicated wine-fridge
• Raritan Elegance 24vDC electric freshwater flushing with selectable sea-water flushing valve marine toilet.
• Pioneer DAB radio/CD player with sub-woofer and internal/external speakers
• Eberspacher Airtronic 5 diesel-fired air-heating system to cabins, heads compartment and aft cockpit.
• Ribeye RIB tender with Yamaha 2.5hp 4-stroke outboard engine and Simpson snap davits
• Lewmar V3 windlass with stainless steel anchor, stainless chain, remote control and chain counter at helm

UK-VAT paid, privately used and in only her second ownership, BOUNDER is now seriously for sale as her owners are looking to consolidate their sizeable fleet.


The previous owner of “BOUNDER” was an experienced yachtsman that commissioned her from new and was thoroughly involved in the build. Specification included significantly upgraded systems and specifically soundproofing. “BOUNDER” was his second Seaward and he kept her in absolutely immaculate condition, maintained by a professional skipper. We were thoroughly smitten by her sea kindly motion, comfort and build quality as we upgraded from planning-hulled motorboats. However busy diaries have kept us from making time to be afloat during our ownership and “BOUNDER” is now offered in pristine condition.


This rugged Seaward 42 was launched in late 2016 and has since proved time and again her mettle in seas that would challenge any vessel. ‘BOUNDER’ was specified by her original owners to travel long distances in comfort, with a view, particularly, to explore the North of Scotland, Norway and the Baltic; a trip that ‘BOUNDER’ successfully took in her stride in 2017. Boasting a technical specification that includes long range additional fuel tanks, large capacity generator and inverter system, Gyroscopic stabiliser and Humphree active ride control interceptors, ‘BOUNDER’ is a ‘go anywhere’ explorer.

No compromise is made in comfort however, ‘BOUNDER’s generous options list also includes a high spec galley, ‘Quooker’ hot water system and a capacious freezer; her bunks are provided with proper sprung mattresses and the heads has a powerful, hot shower and electric, fresh water flush toilet.


The Seaward 42 is an exceptional seagoing craft designed for seriously intrepid boaters who still want to do 25 knots…

…If £580,000 (note – BOUNDER’s original invoice cost was in excess of £730,000 and her replacement cost today would be upwards of £900,000) and upwards seems like a lot of money to pay for a boat with just a single sleeping cabin forward, then my test convinced me of the very opposite; that the 42 actually represents value for money when you take into consideration the high degree of customisation on offer and the outstanding practical detailing that’s clearly the result of obsessive compulsive disorder at work somewhere in the company…

…One of the key things that separates the intrepid 42 from a displacement plodder from the likes of Nordhavn is its excellent turn of speed. Our boat reached 25.5 knots with its owner specified 425hp Cummins… Given how soft riding the 42’s Nelson pilot boat form is, here’s a boat with the potential to undertake rapid transit even when it’s rough outside.

That said, its form also lends itself to fuel efficient cruising at single figure displacement speeds, courtesy of a long deep keel that stops it from wandering and helps to protect all the sterngear.


There are the pretenders, the boats with blue hulls and chunky trawler-like styling that only appear to be serious seagoing boats. And then there are boats like the Seaward 42, which truly can venture forth any time in any weather. The 42 is the real McCoy.

Motor Boat & Yachting – 2016

2016 Seaward MY-42 ‘BOUNDER’ for sale – Asking £450,000 UK VAT paid – full details here

Do you have a yacht like this to sell? Grabau International are always looking for new high-quality cruising and motor yacht listings both in the UK and internationally. For further information about our tailored brokerage services, please look here or feel free to contact us.

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