Chartwell targets small fishing market with new "Catchwell" catamaran design
13 December 2018
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New Catchwell catamaran, with design input from Diverse Marine, brings technology and lessons learnt from large vessel operation to private and small-scale commercial fishing
Chartwell Marine, a pioneer in next generation vessel design, has announced the launch of the Catchwell, a brand-new vessel design for the small-scale private and commercial fishing sector. The catamaran design responds to extensive feedback from fishermen, alongside operational lessons learnt from advanced maritime industries, such as offshore wind.
The Catchwell, available in 10 metre and 12 metre models, is optimised for carrying high loads, with a semi-modular catamaran hull form that can be adapted to the needs of the fisherman or operator. The first vessel is currently in build on the Isle of Wight by experienced vessel construction, refit, repair & maintenance specialist, Diverse Marine, who have provided extensive input during the design process.
As many of the existing vessels at the smaller end of the market start to reach the end of their lifetime – and as opportunities emerge for small-scale fishing in Europe and further afield – demand for new, more capable fishing boats is growing. Vessel owners who invested in catamarans 10 to 15 years ago and are now looking to replace their boats, alongside new entrants to the market, now have an opportunity to take advantage of a new generation of vessels with significantly enhanced performance and efficiency.
In particular, many existing small catamaran designs are not well optimised for high volumes of cargo. With limited reserve buoyancy, a large catch may cause ‘wet deck slamming’ – the results of which are an uncomfortable ride in rough waters, potential damage to the structural integrity of the vessel, and also more fuel burnt during operation.
The new Catchwell design benefits from significant research and development carried out in the development of state-of-the-art crew transfer and support vessels for the offshore wind energy sector. The vessel has been designed with a higher freeboard, meaning that the wet deck between the twin hulls of the catamaran doesn’t come into contact with the water, even under heavy loading. This avoids aggressive vertical accelerations, leading to a smoother, safer and more fuel-efficient ride.
Alongside this new hull form, the Catchwell brings in a number of tried and tested innovations from larger catamarans that enhance the long-term reliability of the vessel, faced with long operational hours in rough waters. These include commonality of components across the vessel, which makes conducting repairs on board as simple as possible and reduces time spent out of action.
Andy Page, Managing Director, Chartwell Marine said, “In light of market conditions over the past few years, the design of smaller fishing vessels hasn’t really moved on, leaving private and commercial operators with a shortage of high-quality options.”
“Now, with prospects looking a little better – and simultaneously many older vessels going out of service – we have an opportunity to address this by taking lessons learnt from other sectors and applying them in the development of a new breed of modern, safe and efficient workboats.”
Ben Colman, Director, Diverse Marine, added “Having worked extensively with fishing vessel operators – and taken years of feedback into the development process with Chartwell – we are confident that the Catchwell is the small fishing boat that the market is looking for. With the first vessel in build, we’re applying the same rigour and principles that go into the construction of larger catamarans, to ensure that quality of design is matched by quality of build.”
To read more and view the Catchwell specification sheet, please click HERE
Southampton, 17th June 2025 — NR Marine Services is excited to announce that it has commissioned Chartwell Marine, a trusted pioneer of next-generation vessel design, to design a new CTV in response to client requests for a new class of vessel that is capable of supporting older generation assets, now referred to as legacy turbines, but utilising modern construction and outfit technology to maximise vessel fuel efficiency and technician comfort. It has been a generation since UK based Naval Architects and Shipyards designed a sub 22m, sub 60 tonne, sub 3m bow height crew transfer vessel. Chartwell Marine has developed the ‘Defiant Class”, a 20m CTV designed to Workboat Code Edition 3 with IMO Tier 3 compliance featuring a step free flush forward deck, resiliently mounted superstructure and modern furnishings and materials used in larger CTVs. This is a bold, DEFIANT step to do different, to create a new class of smaller CTV required for legacy turbines whilst not losing the core identity of modern UK designed, UK built and UK operated CTVs. DEFIANT in compliance, this new class of CTV will comply with Workboat Code Edition 3, IMO Tier 3 and the spirit and core fundamentals of HS_OSC – albeit in a more cost-effective approach. DEFIANT in pricing, it is essential the new class is cost effective in the modern market. UK quality but smartly sized to benefit from UK supply chain core strengths and therefore pricing. DEFIANT in reliability, working with supply chain to integrate a new, smaller Quad IPS IMO Tier 3 or Hamilton Waterjet propulsion solution with high power to weight ratio whilst maintaining simple, quality and reliable engineering. DEFIANT in change, accepting most legacy turbines have unique site requirements, the vessel retains flexibility to be tailored to different projects from a water jet propulsion system for shallow water sites and hybrid options where budgets allow to internal modularity to suit different racking and seating solutions. Andy Page of Chartwell Marine Ltd. said: “It is always enjoyable bringing a new class of vessel to the market. What’s interesting in this case, is the vessel is based-on “legacy vessel” parameters but with modern up-to-date experienced thinking. With the Defiant Class, we are able to utilise our proven high efficiency, high seakeeping performance hull form, in a smaller, more dynamic cost-effective platform, appropriate for the legacy turbine projects the vessels are intended to support”. Richard Thurlow of NR Marine Services Ltd. adds: “NR Marine Services is excited to be the first to bring the brand-new Chartwell DEFIANT Class CTV to the market. With strong industry focus being on the HSOSC market space, the CTV development has been taken away from the smaller vessel market. Working closely with Chartwell Marine and Diverse Marine we have looked at incorporating as many of the recent CTV developments a possible into a smaller package. Step free access from deck level to bow step over point, tiered seating, Male and Female heads, comprehensive galley suite and optimised hull design for near shore projects. Following an internal fleet review long with external market research, the data shows that there is a potential to replace older tonnage which is between 10-15 years old for near shore projects which have a lifespan that warrants investment in new CTV’s”. Ben Colman of Diverse Marine Ltd. adds: “Many years ago, the UK proved that building large numbers of smaller CTV’s was possible but these times have been forgotten as the CTV industry as evolved into larger. HS-OSC compliant craft. It is both exciting and challenging to be involved a project to build a new smaller CTV that meets the growing demand for legacy turbine access with modern technological compliance, modern materials, high fuel efficiency, hybrid options. Put simply the Defiant hosts, a modern, clean and spacious environment but on a smaller highly efficient platform that suits the smaller harbours, short transit sites and shallow water projects." ENDS Chartwell Marine is a trusted pioneer of next-generation vessel design. A reputed naval architect with an industry-leading track record designing award-winning high-speed vessels, Chartwell Marine supports ambitious boat builders and vessel operators around the world with specialist, independent design and consultancy services. To find out more, please visit: http://www.chartwellmarine.com/ About NR Marine Services: At NR Marine Services Ltd. we own and operate a fleet of seven vessels. Our services are available in the UK and throughout Europe. We pride ourselves on our offshore wind industry experience of more than 20 years’, including management of crew transfer vessels, turbine management in construction, commissioning and operational phases. Founded in 2019 and headquartered in Great Yarmouth our vessels are available for a wide range of duties. To find out more, please visit: https://www.nrmarine.co.uk
Cowes, UK (06.06.25) Following on from the success of the Storm Class CTV’s, we are delighted to announce that NR Marine Services have engaged WMD to develop the new Cyclone Class CTV. Building on the proven capabilities of the Storm Class, the Cyclone Class will enhance onboard accommodation and welfare facilities, offering a new level of comfort and functionality for offshore operations. NR Marine’s Storm Class vessels have been designed by WMD and built at Isle of Wight shipyard, Diverse Marine. The Cyclone Class continues NR Marine’s commitment to supporting UK design and shipbuilding. With an extended 29-metre hull, the Cyclone Class allows for increased internal volume, accommodating up to 6 cabins and 24 passengers. Key design features include: Deck cargo capacity: 30 tonnes Propulsion: 4 x Volvo IPS1050 Maximum speed: 28 knots Length: 29 metres Richard Thurlow, Director at NR Marine says “Working with WMD on the new Cyclone range was a no-brainer. Their previous designs have exceeded expectations, and we’re excited to welcome this new vessel into our fleet.” Nikki Walker, Project Manager at WMD comments “We’ve really enjoyed seeing NR Marine grow since the delivery of their first WMD-designed vessel. Being trusted to help them develop a new class of vessel is a huge compliment, and we look forward to seeing the Cyclone Class take shape and enter operation.” WMD will be exhibiting at Stand G19 from 10–12 June 2025 in Southampton. NR Marine will be showcasing their new vessel, NR HUNTER, at Berth VB22 alongside Diverse Marine.
Cowes, UK (27-02-25) Since launching its Finance & Lease Programme in November 2023, Diverse Marine has successfully delivered two crew transfer vessels (CTVs), with three more currently in build for delivery this year and two further shortly thereafter of the first batch.The programme continues to operate as a rolling initiative, providing new-build CTVs based on customer demand. The first vessel completed under the programme was NR Alpha, which was unveiled at Seawork last year. This Storm Class CTV has set new benchmarks for fuel efficiency and performance, leading NR Marine Services to order a third vessel—NR Rival, the first of the new Typhoon Class CTVs. NR Rival was delivered in January 2025. TheTyphoon Class features a hull form designed for exceptional head-sea performance and tower access while maintaining high buoyancy reserves for superior seakeeping in following and stern-quarter seas. It also comes with Zero Emissions (Power Management) class notation, recognising its efficiency in reducing fuel consumption and CO2 emissions. Stock Build 3, a first Brevity Class CTV is undergoing sea trials with the vessel available for quick delivery following rebrand to suit a prospective clients requirements. Stock Build 4, to be named NR Rebellion, a second Typhoon Class CTV, is now in its final build phase, with the wheelhouse and saloon fitted earlier this month. Again ordered by NR Marine Services, she is scheduled for launch and sea trials in March. Owen Nutt, Director at NR Marine Services, commented: “Receiving three world-class CTVs in the last 10 months has been transformative for our business. Each vessel has outperformed expectations in speed and efficiency, delivering significant fuel cost savings for our clients.This success has given us the confidence to order another Typhoon Class CTV and another Storm Class CTV through Diverse Marine’s Finance & Lease Programme, and we look forward to putting them to work soon.” Meanwhile, Stock Build 5, to be named NR Hunter, a third Storm Class CTV, is currently under construction at Diverse Marine’s facility in Cowes and will be launched at Seawork in June. Stock Build 6, an Ambitious Class CTV is also currently under construction and will be delivered to OEG, whilst Stock Build 7, a further Brevity Class CTV, will follow in Q3/Q4 of this year. Ben Colman, Director at Diverse Marine, added: “The success of our Finance & Lease Programme is proving that high-quality, next-generation CTVs can be more accessible and affordable for operators. By reducing the financial barriers to vessel ownership, we’re enabling companies to upgrade their fleets with more efficient and capable vessels. With four more vessels in build and strong interest in future slots, we look forward to continuing to support the offshore wind industry with innovative financing and cutting-edge designs.” For more information on the Diverse Marine Finance & Lease Programme, including availability and build slots, please contact Ben Colman or Peter Curtis on 01983 300656.
