Page 61: of Maritime Reporter Magazine (June 1999)

•Note:- Rdwt is 110% of lightship • Bow ramp can work gradient

CMP is a registered trademark of CMP Corporation. ©1999 CMP Corporation 125S Medium Speed Cat

STS design 22knots with 3300 Rdwt •125 x 35 x 4.8draft, 4 x 3500kW •3673m2 main deck (truck axle) •5300m2 car decks gap. Its obvious basic design ingredi- ents had to be: • Eliminating salt water ballast totally; • Lightweight (aluminum and GRP composite) superstructures; • Sticking to a steel/high tensile steel hull, for less capital cost and ease of repair and maintenance in outlying regions; • Good seakeeping, particularly in head seas; • Alternative speed range for low and high season market demands; and • A better Rdwt as a percentage of lightship.

The STS design result was a catamaran hull which achieved Rdwts of 85 to 110 percent of lightship. These craft are designed with almost a SWATH fore- body, a catamaran afterbody, quadruple screws, aluminum superstructure, alu- minum ramps, watertight doors and engine hatches. For rough water areas, there is a high bow arrangement and for- ward accommodation, and for inshore areas the superstructures are generally positioned off center on one side of the vessel.

The center lanes were designed for truck axle loadings and the side lanes only for car axle load. Sea Transport

Solutions point out that there are so many RoPax vessels around the world with full truck axle loads throughout their vehicle decks, without the available stability to use it, so in effect the opera- tor is just carrying weight for no good reason.

The following is the profde of the 200 x 63 ft. (60 x 19 m) STS cat and with a draft of 8 ft. (2.5 m) can carry 450 tons of vehicles at speeds up to 20 knots.

Inshore Waterways Solutions

For the demands of partially sheltered waters and areas with little or no facili- ties, a shallow draft (4.5 ft. [1.4 m]) design range was developed. These craft had scarphed bulbs and incorporated a two piece aluminum bow ramp which could beach directly on to shallow gradi- ent boat ramps — a big plus for start-up ferry operations which do not have the capital required for shore linkspans. The vessel shown below operates from Bris- bane to North Stradbroke Island at an impressive speed of 17.5 knots maxi- mum, and 15 knots service. A sister ves- sel is operating in New Zealand from

Auckland to Waiheke Island. They can :away •Rdw wt 173 tonnes, service speed 15 km 1 "M.V. Island Navigator" - 39m Roro/Pax Catamaran

CMP OR OEM?

CORPORATION®

P.O. Box 15199 • Oklahoma City, OK 73155-5199 • (405) 672-4544 • http://www.cmpcorp.com

Your compressor can't tell the difference, but you can.

One of these replacement parts is made by the original equipment manufacturer, the other is made by CMP, the world's leading independent manufacturer of replacement compressor parts.

Because they're both a perfect fit, your compressor can't tell the difference, but you can. By the money, time, and frustration you save when you call CMP.

When any kind of refrigeration unit stops cooling, call CMP first.

Whether it's parts to fit Thermo King, Copeland, Carrier, or just about any other brand of compressor, we'll give you a perfect fit, OEM quality without the OEM price tag, and the fastest service in the industry.

June, 1999 Circle 139 on Reader Service Card 63