Robert Allan Ltd. to design a new generation of RAmparts 2400-W tugs for SAAM S.A.

November 9, 2015

214-059 Colour GA AWL.cdr

SAAM S.A., Chile recently signed a contract with Robert Allan Ltd. for a new generation of RAmparts 2400-W Class tugs.

The RAmparts 2400-W Class tugboat is a twin Z-drive, diesel-powered tug, designed for maximum efficiency in the performance of ship-assist and terminal support operations. The hull form and layout have evolved through the extensive experience of the designers. Ship-handling is performed over the bow using a high-performance, split drum hawser winch. The tugs will also provide fire-fighting capability.

This compact tug has up to date accommodation for a crew of 6 in 2 single rooms and 2 double rooms.

The design complies with ABS Requirements for the following notations:

✠ A1, Ⓔ, ✠ AMS, Towing Vessel, UWILD, Fire-fighting Vessel Class 1

Particulars of the RAmparts 2400-W design are as follows:

Length overall:
Beam, moulded:
Depth, moulded:
Maximum Draft (to bottom of skeg):
– 24.40 m
– 11.25 m
– 4.37 m
– 4.17 m


Tank Capacities are as follows:

Fuel Capacity:
FW Capacity:
Ballast Water:
– 115 m³
– 25 m³
– 34 m³


Robert Allan Ltd. also provided a complete structural steel parts package developed from the design drawings prepared for this project. Parts were defined and nested using ShipConstructor software, complete with part identification code, suitable as input to the shipyard’s NC burning code.

The first two boats for SAAM’s Peruvian affiliate TRAMARSA, named Chincha and Tupac, are now under construction at Wuxi Shipyard in China with others soon to follow.

For more information on the RAmparts Series or any other Robert Allan Ltd. design, please contact us at