PROJECT

Ferry Sponson Installation

SCOPE

Arch Engineers Ltd. developed a self-supporting installation method for the 3/4 sponsons on the Nelson Ferry. The design eliminated the need for continuous crane support during welding by strategically placing strongback and keeper plates. Through targeted stability analysis and a sequenced welding plan, Arch minimized bracketing requirements while maintaining structural alignment.

LOCATION

Nelson, British Columbia

PROJECT SUMMARY

Arch Engineers Ltd. was engaged to provide essential design support for a marine rail crane system intended for loading equipment into the engine room of a ferry under construction. Importantly, the design had to accommodate the ferry sponson, requiring the rail crane to navigate existing doorways, bulkheads, cable trays, and utilities within the vessel. Therefore, the team carefully resolved conflicts to ensure the rail crane could function effectively in the limited space.

A critical aspect involved designing unique connections that allowed rail sections to pass smoothly through bulkheads and doorways near the ferry sponson. These custom connections ensured the marine rail crane system maintained its integrity and functionality despite the ship’s structural limits.

Additionally, the design process emphasized optimal material selection and usage. Arch Engineers ensured the rail system was strong enough to handle heavy engine room equipment but flexible enough for the ship’s complex layout. Moreover, they worked closely with the client to develop a rail crane design that met all functional needs while minimizing disruption to the vessel’s existing infrastructure.

As a result, the team delivered a highly efficient loading system enhanced by innovative connection designs. This system facilitated the safe and effective transport of equipment within the ship’s confined spaces. Ultimately, this project highlights Arch Engineers Ltd.’s expertise in delivering customized engineering solutions, showing their ability to meet challenging design constraints with precision and ingenuity.

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