MV Columbia: The Flagship of the Alaska Marine Highway System
The MV Columbia serves as a cornerstone of maritime transport in the Pacific Northwest, acting as a mainline ferry for the Alaska Marine Highway System. For over four decades, this vessel has provided a critical link between the mainland United States and the remote communities of the Alaskan Panhandle, navigating the scenic and complex waters of the Inside Passage.
Named after the Columbia Glacier in the Chugach Mountains—which itself takes its name from Columbia University—the MV Columbia is designed to handle the rigorous demands of northern waters while transporting both passengers and vehicles over vast distances.
[ไม่มีภาพประกอบ]Key Facts
- Role: Mainline RORO (Roll-on/Roll-off) ferry.
- Builder: Lockheed Shipbuilding in Seattle, Washington.
- Capacity: 499 passengers and 134 automobiles (20 ft lengths).
- Route: Spans from Bellingham, Washington, to Skagway, Alaska.
- Service Life: In active service since 1974.
Technical Specifications and Design
The MV Columbia is a RORO ferry, a type of vessel designed to carry wheeled cargo, such as cars and trucks, that are driven on and off the ship via ramps. This efficiency is vital for the communities it serves, where the ferry often acts as the primary highway.
The ship features a sophisticated layout to maximize space. It includes two vehicle decks, with an upper deck situated between the main vehicle deck and the cabin deck. To move vehicles between these levels, the ship is equipped with two vehicle elevators capable of hoisting 19-foot vehicles along with their passengers.
Performance and Dimensions
Measuring 418 feet in length with a beam of 85 feet 1.5 inches, the vessel has a displacement of 7,745 long tons. It is powered by two V12 Enterprises engines, each producing 9,000 hp, providing a total installed power of 12,350 hsp. While its standard speed is 17.3 knots, it can reach 22.0 knots when utilizing Bunker "C" fuel.
| Feature | Detail |
|---|---|
| IMO Number | 7320095 |
| MMSI Number | 367144000 |
| Length / Beam / Draft | 418 ft / 85 ft 1.5 in / 24 ft |
| Passenger Capacity | 499 |
| Vehicle Capacity | 134 (20 ft lengths) |
| Home Port | Ketchikan, Alaska |
Operational History and Maintenance
Since its acquisition in 1974, the MV Columbia has navigated a demanding route. During the summer season, it typically runs from Bellingham, Washington, to Skagway, Alaska, stopping at key ports including Ketchikan, Wrangell, Petersburg, Sitka, Haines, and Juneau.
Maintaining a vessel of this size in harsh environments requires significant upkeep. The ship has faced several notable mechanical challenges over the years:
- 2006 Engine Fire: On July 2, 2006, a fire in the auxiliary engine room occurred in the Seymour Narrows of Canadian waters. This temporarily impaired steering and propulsion, requiring repairs at Duncan Bay, British Columbia, and later at Alaska Ship & Dry Dock in Ketchikan.
- 2007 Bearing Failure: In August 2007, a connecting rod bearing failure in the starboard engine forced the ship out of service. This led to a comprehensive overhaul of both main engines at the Cascade General shipyard in Portland, Oregon, before the ship returned to service in May 2008.
- 2009-2010 Maintenance: During a winter layup in Ketchikan, the vessel underwent an overhaul of its propeller shafting and wheels, and repairs were made to the port main engine viscous damper drive coupling.
Frequently Asked Questions
What does "RORO" mean in the context of the MV Columbia?
RORO stands for "Roll-on/Roll-off," referring to the ship's design which allows vehicles to be driven directly on and off the vessel using ramps, rather than being lifted by cranes.
Which ports does the MV Columbia visit?
The ferry serves several major communities along the Inside Passage, including Bellingham (WA), Ketchikan, Wrangell, Petersburg, Sitka, Haines, Juneau, and Skagway (AK).
How are vehicles moved to the upper deck?
The MV Columbia uses two onboard vehicle elevators that can lift vehicles up to 19 feet in length, along with their passengers, to the upper stowage deck.
Who owns and operates the MV Columbia?
The vessel is owned and operated by the Alaska Marine Highway System.
What is the maximum passenger capacity of the ship?
The MV Columbia can accommodate up to 499 passengers.