Coast Guard and Government Vessel Projects
Conversion of the CCGS Amundsen
The CCGS Amundsen (ex-John Franklin) was a Type 1200 Canadian Coast Guard heavy icebreaker. As part of Canada’s commitment to Arctic research and the effects of Global warming, bids were solicited for re-designing and refitting this vessel for its new role as a dedicated platform for Arctic oceanographic research initiatives. Fleetway was awarded the primary engineering contract for this conversion and developed the Design and Conversion Drawing Package and specification for the shipyard to complete the refit
The major modifications to the ship included:
- the addition of a slow speed manoeuvring and propulsion drive including a bow and stern azimuthing thrusters for dynamic positioning;
- the installation of a SIMRAD EM 300 Sonar System for conducting ocean-floor mapping and retractable SIMRAD EK 60 Echo Sounders and ADCPs for water column analysis and current profiling, and
- The installation of an 8 ft by 8 ft moon pool, lifting arrangements and winches to enable the deployment of CTD Rosettes and ROVs.
The CCG requirement called for the converted vessel to comply with: Canada Shipping Act, Equivalent Standards for the Construction of Arctic Class Ships, Health and Welfare Canada, other relevant regulatory bodies such Labour Canada, etc, and SOLAS.
Fleetway developed a strip-out and installation specification that detailed the extent of the structural, systems, equipment and hull outfit changes associated with the conversion. The design and conversion process was completed in 10 months.
CFAV Damaged Stability Improvements
The CFAV Quest is an acoustic research ship commissioned in 1969 and extensively modernised in 1999. Following an Inclining Experiment in 2008 it was discovered that due to weight growth during and subsequent to the modernisation, the ship was failing damaged stability criteria. Fleetway were tasked by DND to come up with solutions to this problem which resulted in limiting its deadweight capacity, fitting additional internal subdivision and the incorporation of large above water sponsons at the stern of the ship. The sponsons were designed to increase the ship’s reserve of buoyancy and to improve its righting arm as it heels after damage. The CFAV Quest was the first operational ship in the Canadian Navy to have its stability checked against the latest SOLAS probabilistic damaged stability assessment methodology and Fleetway are now proficient in the application of this approach. The picture shows the configuration of the above water sponsons.
CCGS Eckaloo Shallow Water Hull Design
The CCGS Eckaloo is a vessel that operates on the shallow McKenzie River. At certain places and at certain times of the year, the river flows so fast that the vessel cannot navigate. Fleetway undertook a major design study that resulted in the complete redesign of the after under body in order to increase the speed and manoeuvring while maintaining the draft. Fleetway conceived a modified tunnel design which forced water into the propeller duct from the side of the vessel rather than from underneath. Fleetway undertook the preparation of the production specifications and drawings for undertaking the following: strip-out of existing nozzles, rudders and aft hull structure; fabrication and installation of redesigned aft hull structure; installation of new propellers, relocation of rudders; and relocation of gear box lube oil keel coolers. The refit/conversion project for the CCGS Eckaloo was not undertaken and the vessel remains in service.
Wolfe Island Transportation Study
Fleetway was commissioned to participate in the ship design aspects of the Wolfe Island Transportation Study. As part of this study, Fleetway carried out a complete condition survey of the Wolfe Islander III. Fleetway had surveyed the vessel in 2006, but that survey focused upon the condition of the vessel for the purposes of lengthening it. The new survey took two approaches: first was to check the vessel against the survey in 2006 to see if anything significant had changed including its general condition and any changes to its weight and stability that would require corrective measures. The second was to obtain operational data that could be used to develop new vessel configurations and cost estimates. The Fleetway survey and report assessed the vessel in the areas of suitability for operations, engines (propulsion and generators), ship fitted equipment, structural integrity, and maintenance, both planned and accomplished.
The survey work concluded with the submission of a detailed report that found that the vessel hull structure was in good shape, with some minor rust, the piping systems were in good shape with some smaller sections to be replaced in the future and that the propulsion machinery and drive train were in excellent condition, having been maintained very well, and the electrical and electronic systems were adequate. The report also made some minor corrective action recommendations but concluded that the vessel was fit for service at its existing workload.
Type 1000 Class Preliminary Design
This project involved the Concept, Preliminary, and Contract design of a 2000 tonne Multi-Task, Shallow Draft, and Utility Vessel for the Canadian Coast Guard. Fleetway personnel designed this vessel to meet very stringent design and operational requirements as well as the requirements of both Classification and Regulatory authorities. The vessel incorporated an AC-AC diesel electric propulsion system and twin azimuth thruster units. The Contract Design package contained over 100 individual drawings, 16 design reports and a detailed construction specification.
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