Portable Towing Rig

Composites Testing

Tank Testing

Hand in hand with a firm belief in the value of innovation and stepping outside the square to find solutions, is a commitment to research and development.

At CLD this has involved the in-house design and build of portable towing rigs, using numerically controlled towing devices and automatic data logging to produce resistance data comparable in quality to multi-million dollar test facilities. In the absence of a local NZ towing tank facility, this equipment allows the CLD team to evaluate new concepts very rapidly and at very low cost, considerably reducing the time and money spent on formal tank testing.

CLD has also recently undertaken a number of self propelled large scale model tests to evaluate speed and powering requirements, as well as the sea-keeping attributes of two new hull forms

Research - 'USPT'

Research - 'CAT'

Hull development work happens almost continuously and despite the remarkably high efficiency of the Mark I wavepiercer hulls, four years of research has yielded further gains to be made, putting CLD at least one step ahead of the rest of the world in long slender catamaran hull technology.

A high level of expertise in composite structural and production engineering sees ongoing research work in this field; CLD utilises the well equipped mechanical testing laboratories at the University of Auckland and quasi-Government agency, Industrial Research Ltd. 

Recent work has included design, analysis and testing of innovative jointing techniques on wood composite vessels, resulting in substantial cost and labour hour savings during the subsequent build of the vessel.  With a strong background in composite materials testing, CLD is also able to constructively co-ordinate and even conduct laminate testing on behalf of customers and boatyards when classification requirements on a particular project demand such specialized testing to be performed.

Latest research efforts have involved co-operation between Crown Research Institute, Industrial Research Limited and Craig Loomes Design Group Limited on measurements of vessel motions.  This work involved the mounting of accelerometers and data logging devices on board the manned scale model of an 18m wavepiercer trimaran and a 30' power catamaran - both CLD designs and comparing the results with those of 6 and 12m planing monohulls in an effort to quantify the ride quality differences between different hull types.  This work has been the catalyst for ongoing design and research efforts in the high speed ferry industry; further evidence of the versatility of the design office.


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