Some of Our Recent Projects: Existing and Previous Customers

15m SWATH Workboat (New Contract August 2011)

Ad Hoc Marine Designs have used their expert knowledge in swath design to create possibly the world’s smallest SWATH workboat. This 15m SWATH is for an Asian client where seakeeping is a high priority. Workboats are often at sea for many hours in all sort of hazardous conditions for the crew which can easily lead to fatigue and tiredness. Having a vessel that does not "throw you about" with increasing sea state whilst performing very detailed work, a SWATH was the obvious solution. More details to follow...

16m Windfarm Service Catamaran for C.Truk, UK

Ad Hoc Marine Designs created many concepts before arriving at a solution for C.Truk. This 16m Windfarm catamaran had the design brief of being, light, fast and able to carry high loads, as well as the usual turbine duties. The design was to incorporate the unique "flexible pod" wheelhouse units that C.Truk has developed for the fast turn around and multipurpose capabilities making the design suitable for many different roles in the Windfarm sector. The vessel called Ashera, is made of composite hulls and an aluminium extrusion deck. The vessel satisfies MCA Category 1 in the SVC code. A write up of the vessel may be found in the publication July edition of "Ship & Boat" from RINA.

Rederij Doeksen, Holland

Ad Hoc Marine Designs were contracted to investigate the feasibility of stretching 2 existing vessels in their fleet by approximately 10 frames. One being a 45m and the other a 60m RoPax vessel. The investigations focused upon the "will it pass Class structure rules without major changes", weight study to establish the new weights, the stability and hydrostatics to ensure Flag compliance as well as speed predictions. The results provided sufficient information for Rederij Doeksen to make an informed decision about future possibilities and growth within the company.

Rederij Doeksen, Holland

Having purchased an ex-FBM vessel, Rederij Doeksen approached Ad Hoc Marine Designs, the original designers, of their 50m catamaran. Providing advice on performance between the original Paxman to MTU engines, altering the engine beds to suit the new arrangement, all to Class. Designing a high speed rudder system to allow turning on rudders not the jets giving an increase in straight-line speed. Strengthening up the bow to become a fender. The fender allows the Master to ‘bump’ onto the fixed piles for ease of berthing. Finally arranging the new Safety plan, after Rederij Doeskeon changed the entire layout to suit their varied role.

Testimonial

"With their wealth of experience, especially in designing high speed vessels, Ad Hoc Marine Designs Ltd. was the obvious choice to turn to, when our company acquired the FBMA built fast ferry Supercat 2002. As we had plans to completely rebuilt the vessel, and re-engine her at the same time, and do this all under our own control, we needed all sorts of advice and someone who could provide us with new or modified drawings. Starting with speed/power predictions to determine engine size and consumption, up to a modification of the existing safety plan. Acting as our design office and consultancy, Ad Hoc Marine Designs Ltd. provided us with detailed drawings for the new engine beds, advised us on the repositioning of the transmission, calculated, designed and made drawings for 2 high speed rudders supplementing the water jet, and allowing us to run our specific route steering with just rudders. Advice was given on the down sizing of the existing skegs of the vessel. As we wanted to rearrange the interior it was found necessary to reposition some of the pillars. Based on our input, and wishes, a solution was found, including extra deck beams, and repositioned pillars to ensure the structural integrity. In short; Ad Hoc Marine Designs Ltd. is a versatile partner whenever you want to build or rebuild a vessel, from SWOT analysis to conceptual decision making , as well as designing your vessel or assistance during the building process."

Henk Boorsma, Rederij Doeksen, Holland.

EuroShip Services, Holland

Designing a 24m WindFarm catamaran. This vessel is to support the new Windfarms being erected in the North Sea. The vessel is 26.35m overall on a waterline length of 22.73m. The hull form is of catamaran configuration with special emphasis in the bow shape to cope with working year round in the hazardous North Sea environment. The vessel has a large aft deck with a deck crane with a 5.5m reach. The saloon has seating for up to 48 crew/passengers which can be removed for greater cargo storage when required. There is also a small accommodation below decks of 2 berths port and starboard.

Lockheed Martin, USA & FBMA Inc, Philippines

Acting as the chief designer and providing full design technical support during the construction of the SLICE®. Having previously assisted in the design of LM’s SLICE at FBM Babcock, Nigel Warren, acted as Chief Designer and, John Kecsmar senior naval architect, continued their design and technical support as well as on-site technical support during the construction of the SLICE® vessel under the new company of Ad Hoc Marine Designs Ltd. This also included basin trials and inclining experiment.

Dixon Yacht Design, UK

Using FEA to design foundations for chain plates on a large sailing yacht. The yacht was specially designed to be a “clean deck” which created such huge loads that the structure could have been compromised. Therefore the frames and plate required detailed analysis, for strength and fatigue.

South Boats, UK

Undertaking sea trials of several of their windfarm catamarans. Advising on performance issues, undertaking model tests of two different hull forms, comparing regulatory issues between HSC, EU and Workboat Code, undertaking structural designs.

Thornycroft Maritime & Associates Pty Ltd., Australia

Having won a successful order for several 51m Patrol Boats, TMA employed Ad Hoc Marine Designs Ltd. to design the light weight steel structure of this high-speed patrol vessel for Indian Customs. Also advising on many smaller special projects including heavy lifting and turning of hulls and using FEA analysis for Class approval of structural designs.

MEF Babcock, UK

Designed modular floating pontoons for the Royal Marines base for berthing 30m landing craft in an exposed location. The pontoons had to take into account the extreme movements between each pontoon and the loads imposed by each to its adjunct pontoon. The general arrangement and construction drawings were completed to suit the tight financial budget. As-fitted drawings for a RIB Rack were also supplied.

Other Miscellaneous Work

Designing a heavy lift frame work structure for transporting a large 50m Catamaran from the US to Hong Kong via a lift ship. Having advised and designed the cradle for lifting, onsite support during construction of the cradle to ensure the lift went as smoothly as possible. Further details of other lifting operations can be found in FastFerry International, September & October 2009.

In-house design of new hull forms for low wash lower
resistance as well as personal interest and experiments into deck diving of catamarans, often referred to as bow diving. A brief summary of the deck diving experiments can be read in FastFerry International, June 2006.

Anchor Trays

Design of a special purpose anchor and winch tray for Premier Shipping and Packing as a stand-alone anchoring system.