Cruise ID: SKQ202403S
Multibeam System: EM304 MKII/EM710
Dates: February 2024
- R/V Sikuliaq (SKQ) received several significant upgrades to its multibeam mapping systems during the 2023-24 winter shipyard period in Seward, Alaska
- Conditions in the shipyard were extreme and complicated all work related to these upgrades; although many components of the winter work package were curtailed by these conditions, the UAF and Kongsberg teams completed all major mapping priority projects:
- Complete replacement of the original EM302 with an EM304 MKII system (0.5° TX / 1.0° RX)
- Addition of one Seapath 380-R3 navigation systems with a primary MGC serving the ship and mapping systems; a secondary MGC also serve the ship and acts as a spare for the Seapath 380 / mapping system
- Comprehensive new survey of vessel and sensor offsets by Westlake Consultants
- Installation of new permanent benchmarks at strategic hull locations
- Planned replacement of the EM710 RX array was not completed due to severe shipyard conditions / delays
- The MAC was asked to assist with conducting a full Sea Acceptance Testing (SAT) of the new EM304 MKII and Seapath 380-R3 mapping systems, as well as routine Quality Assurance Testing (QAT) of the original EM710
- Ethan Roth (UAF) and colleagues worked carefully to provide planning, ship time, funding, and permits for adequate ship time and working locations in order to carry out a comprehensive SAT for the new EM304 MKII
- John Hughes Clarke and Larry Mayer (UNH) provided critical support for permitting in Canadian waters
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