Dutch to deliver new survey boat
North Germany’s waterways and shipping office (WSA) in Cuxhaven is taking delivery of a new Dutch-built Type 1640 hydrographic survey boat in November for service on the Lower Elbe.
The 16.4m long and 5.26m wide vessel has been purpose-built by No Limit Ships in Holland under sub contract to Barkmeijer Shipyards. It was floated out at the shipyard late September and was being delivered under its own steam in the second half of November.
The newbuild is designed for shallow water inspection in the Elbe Estuary and for monitoring groynes. It was ordered by the Fachstelle Maschinenwesen Nord (FMN) in Rendsburg which is responsible for the planning, design and development of special workboats and ships for the region’s WSAs.
The Cuxhaven WSA newbuilding is powered by two MAN D2866LXE40 engines each of 190kW developing 12 knots and also has a Kohler 17EFOZD 17kW generator on board. The hydrographic survey equipment includes a new EM2040 multi-beam system from Norway’s Kongsberg.
The boat has a steel hull and aluminium superstructures. It displaces 30 tons and is the latest in a series of similar boats, some of them pilot boats for Dutch service. It draws just one metre and No Limit Ships said the limited draught made it ideal for planned river tasks while its robustness also made it suitable for difficult sailing conditions in the outer Elbe area. The hull and wheel house have been adapted and the underwater hull is also flatter with a greater lifting capacity.
No Limit says operating costs are “considerably lower” than with traditional survey ships. It also says survey work can be carried out 3-4 times faster than with a conventional vessel, because of high sounding speeds offshore and in shallow waters and a wide sounding angle, achieved by the integration of sensors into the hull.
The boat was originally for delivery late last year. However the FMN’s Ulf Kleine told MJ there had been changes and some “delays in the construction process”. Peter Wierenga at No Limit Ships in Groningen said a number of equipment and other modifications had been made and it was now “a great survey ship”.
The latest modifications included a fixed automatic signal mast and a gyro compass instead of a GPS compass. The newbuild also has a new type of fender tube from Fender Innovations and is only the second Type 1640 to switch from earlier Henshaw inflatable fenders. The new fenders are very light and stronger than previous fenders, No Limit said. "Since the centre of gravity is low, stability is excellent and the tube, which is so characteristic of the No Limit vessels, provides extra upward power in the event of rolling or pitching", the firm added.
By Tom Todd
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