An Arctic-bound Foss vessel under construction.

An Arctic-bound Foss vessel under construction. The hull is extra stout to withstand rough seas and ice.

The lower Columbia Region’s economic fortunes are becoming increasingly tied to the energy industry, and that’s especially true for one of the area’s oldest companies.

Foss Maritime, which is celebrating its 125th anniversary this year, has begun building a fleet of three arctic-class tugboats in its Rainier shipyard. It will use the tugs to serve the oil and gas mining industries in Alaska.

Costing $10 million each, the tugs will tow building modules from Korea to remote ocean oil fields in the arctic. The first, the Michele Marie, is supposed to be ready by spring.

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