MV DELOS Conversion – Design for HMAS Sirius

Project SEA 1654 – Maritime Operations Support Capability (MOSC) Phase 2A replaced HMAS WESTRALIA in 2006 with a commercial product tanker modified to conduct underway liquid replenishment. With a 37,000 tonne deadweight double hull product tanker, the MV DELOS, purchased for this purpose.

AMT was contracted by the Prime Contractor Tenix Marine to provide the principle, detail and production design of the conversion, which includes a full Replenishment at Sea facility, an aviation capability and significant platform system, accommodation and outfit changes to meet the operational, performance and availability requirements specified in the Navy’s Mission System Specification and the LR Classification requirements.

The modification involved updates to the ship platforms systems including tank configurations, electrical system, sewage treatment system and other ship distributed support systems, and the addition of a new section of deck to provide storage space and support facilities including power for up to 12 ISO Containers and new RHIBs. The RHIBs and davits from HMAS WESTRALIA as well as larger enclosed SOLAS lifeboats were installed.

Additionally, a new flight deck was installed in the form of a cantilevered structure (the first such structure designed to Lloyd’s Naval Rules) and the accommodation was significantly modified to accommodate a larger Navy Crew. A Rexroth Hydradyne RAS System was installed to provide the vessel with underway liquids replenishment (supply and receive) capability commensurate with the role of a fleet tanker.

Significant communications and electronic equipment to support the naval operational capabilities were installed, which met naval physical security and Electromagnetic security requirements.

This significant and complex project was completed by AMT on time and on budget.