gCaptain is reporting more ships being built for the Arctic. This time it is three tugs being built by Foss in their own Rainer, Oregon shipyard.
General arrangement of Foss’ Arctic Class of tugs. Image: Foss Maritime
These tugs are expected to meet:
- American Bureau of Shipping (ABS) A1 requirements, including standards for hulls, machinery, towing, anchors and cable;
- American Bureau of Shipping (ABS) Ice Class requirements
- International Convention for the Safety of Life at Sea (SOLAS) requirements, including an on-board rescue boat and davit; and
- Green Passport, which requires an inventory of shipboard hazardous materials that make decommissioning of vessels far safer.
In addition to the low-emission Caterpillar engines, the vessels will incorporate several environmentally focused designs and structural and technological upgrades, including:
- Elimination of ballast tanks, so there is no chance of transporting invasive species;
- Holding tanks for black and gray water to permit operations in no-discharge zones (such as parts of Alaska and California);
- Hydraulic oil systems compatible with biodegradable oil;
- Energy efficient LED lighting; and
- High-energy absorption Schuyler fendering.
Looking at the diagram, the tugs appear to be about 130 feet. When it is time to replace the nine 140 ft Katmai Bay class WTGBs, There may be a design already in the water. They did begin entering service 33 years ago.