History | |
---|---|
United States | |
Name | Kathrine Walker |
Namesake | Katherine Walker, the keeper of the Robbins Reef Light |
Owner | United States |
Operator | U.S. Coast Guard |
Builder | Marinette Marine |
Launched | 14 September 1996 |
Commissioned | 1 November 1997 |
Homeport | Bayonne, New Jersey |
Identification |
|
Motto | Keeper of New York Harbor |
Status | Active |
Badge | |
General characteristics | |
Type | Keeper-class coastal buoy tender |
Length | 175 ft (53.3 m) |
Beam | 36 ft (11.0 m) |
Draft | 8 ft (2.4 m) |
Installed power | 2,000 hp (1,500 kW) sustained |
Propulsion | 2 × Caterpillar 3508 DITA Diesel engines; bow thruster, 500 hp (373 kW) |
Speed | 12 knots (22 km/h; 14 mph) |
Range | 2000 nautical miles at 10 kn |
Crew | 24 (2 Officers, 22 Enlisted) |
USCGS Katherine Walker (WLM-552) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1996, she has spent her entire career homeported at Bayonne, New Jersey. Her primary mission is to maintain 335 aids to navigation in New York Harbor, Long Island Sound, and surrounding waters. She is assigned to the First Coast Guard District. [1]
On 22 June 1993 the Coast Guard awarded the contract for the Keeper-class vessels in the form of a firm contract for the lead ship and options for thirteen more. [2] On 7 February 1996, it exercised options for the 2nd through the 5th vessels, including Katherine Walker. [3] She was built by Marinette Marine Corporation at its shipyard in Marinette, Wisconsin. She was the second of the fourteen Keeper-class vessels completed. Originally scheduled for August 1996, her launch was delayed slightly by a fire. [4] The ship was launched on 14 September 1996, [5] into the Menominee River.
Her hull was built of welded steel plates. She is 175 feet (53 m) long, with a beam of 36 feet (11 m), and a full-load draft of 8 feet (2.4 m). [6] Katherine Walker displaces 850 long tons fully loaded. [7] Her gross register tonnage is 904, and her net register tonnage is 271. [8] The top of the mast is 58.75 feet (17.91 m) above the waterline. [9]
Rather than building the ship from the keel up as a single unit, Marinette Marine used a modular fabrication approach. Eight large modules, or "hull blocks" were built separately and then welded together. [6]
The ship has two Caterpillar 3508 DITA (direct-injection, turbocharged, aftercooled) 8-cylinder Diesel engines which produce 1000 horsepower each. These drive two Ulstein Z-drives. Keeper-class ships were the first Coast Guard cutters equipped with Z-drives, which markedly improved their maneuverability. The Z-drives have four-bladed propellers which are 57.1 inches (145 cm) in diameter [9] and are equipped with Kort nozzles. They can be operated in "tiller mode" where the Z-drives turn in the same direction to steer the ship, or in "Z-conn mode" where the two Z-drives can turn in different directions to achieve specific maneuvering objectives. An implication of the Z-drives is that there is no reverse gear or rudder aboard Katherine Walker. In order to back the ship, the Z-drives are turned 180 degrees, which drives the ship stern-first even though the propellers are spinning in the same direction as they do when the ship is moving forward. [10] Her maximum speed is 12 knots. Her tanks can hold 16,385 gallons of diesel fuel [9] which gives her an unrefueled range of 2,000 nautical miles at 10 knots. [11]
She has a 500 horsepower bow thruster. The Z-drives and bow thruster can be linked in a Dynamic Positioning System. This gives Katherine Walker the ability to hold position in the water even in heavy currents, winds, and swells. This advanced capability is useful in bringing buoys aboard that can weigh more than 16,000 lbs. [7]
Electrical power aboard is provided by three Caterpillar 3406 DITA generators which produce 285 Kw each. [7] She also has a 210 Kw emergency generator, which is a Caterpillar 3406 DIT. [9]
The buoy deck has 1,335 square feet (124.0 m2) of working area. A crane with a boom 42 feet (13 m) long lifts buoys and their mooring anchors onto the deck. The crane can lift up to 20,000 pounds (9,100 kg). [7]
The ships' fresh water tanks can hold 7,339 gallons. [9] She also has three ballast tanks that can be filled to maintain trim, and tanks for oily waste water, sewage, gray water, new lubrication oil, and waste oil. [9]
Accommodations were designed for mixed gender crews from the start. Crew size and composition has varied over the years. When she was commissioned in 1997, she had a crew of 18, commanded by a Chief Warrant Officer. [12] As of 2016, this had grown to 2 officers and 22 enlisted personnel. [13]
Katherine Walker, as all Keeper-class ships, has a strengthened "ice belt" along the waterline so that she can work on aids to navigation in ice-infested waters. Not only is the hull plating in the ice belt thicker than the rest of the hull, but framing members are closer together in areas that experience greater loads when working in ice. Higher grades of steel were used for hull plating in the ice belt to prevent cracking in cold temperatures. Her bow is sloped so that rather than smashing into ice, she ride up over it and break it with the weight of the ship. Katherine Walker is capable of breaking flat, 9-inch thick ice at 3 knots. [10]
The ship carries a cutter boat on davits. She was originally equipped with a CB-M boat which was replaced in the mid-2010s with a CB-ATON-M boat. This was built by Metal Shark Aluminum Boats and was estimated to cost $210,000. [14] The boat is 18 feet (5.5 m) long and are equipped with a Mercury Marine inboard/outboard diesel engine. [15]
The ship's namesake is Katherine Walker, the keeper of the Robbins Reef Light. Walker was responsible for saving the lives of 50 people. [16] [17]
Katherine Walker replaced USCGC Red Beech and took over her buoy-tending duties in the New York Harbor area. [12]
After acceptance by the Coast Guard, Katherine Walker sailed from Lake Michigan, through the Great Lakes, and out into the Atlantic to reach her home port in Bayonne on 14 August 1997. [18] She was placed in commission at a ceremony there on 1 November 1997 which was attended by Deputy Secretary of the Department of Transportation, Mortimer L. Downey, and his wife, Joyce, the sponsor of the ship. Also in attendance was Vice Admiral Richard D. Herr, Vice-Commandant of the Coast Guard. [12]
Katherine Walker's buoy tending involves lifting them onto her deck where marine growth is scraped and pressure washed off, inspecting the buoy itself, and replacing lights, solar cells, and radar transponders. The mooring chain or synthetic cable is inspected and replaced as needed. The concrete block mooring anchor is also inspected. Since ice can damage buoys or drag them out of position, Katherine Walker switches larger summer buoys with smaller winter marks and then back again seasonally in the Hudson River. [19]
The bulk of Katherine Walker's year is spent at sea tending its buoys, or in port maintaining the ship. She has been asked to perform other missions, as described below.
In July 2000, Katherine Walker provided security for the parade of tall ships in New York Harbor during OpSail 2000. [20]
On September 11, 2001, the crew of the USCGS Katherine Walker participated in the maritime evacuation of Lower Manhattan. [21] By 24 September 2001, Katherine Walker was stationed offshore from the World Trade Center attack site and was moving cargo from other boats to a pier in lower Manhattan. [22] [23] The ship was honored with the Department of Transportation Outstanding Unit Award for her efforts. [24]
Katherine Walker is one of the main Coast Guard platforms to provide security on the East River when the United Nations General Assembly is in session. She has exercised evacuating the area in the event of an emergency. [25]
On April 4, 2017, the USCGS Katherine Walker responded to a potential environmental disaster on the Hudson River, near Catskill, New York, where a barge ran aground carrying 60,000 barrels of gasoline. A safety zone was established on the river in the vicinity of the vessel. Inspection revealed that the barge's tanks had not been punctured and there was no leakage as a result of the accident. [26]
There are a number of small passenger-only ferries that transport commuters around the New York area. Katherine Walker has cleared channels of light ice for these vessels. [27]
The Coast Guard has offered public tours of Katherine Walker on several occasions. These include:
In Green Bay, Wisconsin in July 1997 [28]
At Coast Guard Station New London in August 1997 as the ship was transiting to her new home port [29]
New York Fleet Week in 1998, [30] 2004, [31] 2005, [32] 2007, [33] 2008, [34] 2009, [35] 2010, [36] 2011, [37] 2014, [38] 2017, [39] 2018, [40]
At the U.S. Lighthouse Depot on Staten Island in October 1998 [41]
At Coast Guard Appreciation Day on Manhattan in July 1999 [42]
The Keeper class of coastal buoy tenders consists of fourteen ships built for and operated by the United States Coast Guard. The ships were launched between 1995 and 1999 and all remain in active service. Their primary mission is to maintain thousands of aids to navigation, both buoys and land-based. Their secondary missions include marine environmental protection, search and rescue, law enforcement, and light ice-breaking.
Fincantieri Marinette Marine (FMM) is an American shipbuilding firm in Marinette, Wisconsin. Marinette Marine was a subsidiary of Manitowoc Marine Group of Wisconsin from 2000 to 2009, when it was sold to Fincantieri Marine Group.
USCGC Juniper (WLB-201) is the lead ship of the U.S. Coast Guard's current class of seagoing buoy tenders. She is outfitted with some of the most advanced technological and navigational capabilities currently available.
The United States Coast Guard Cutter Fir was the last lighthouse tender built specifically for the United States Lighthouse Service to resupply lighthouses and lightships, and to service buoys. Fir was built by the Moore Drydock Company in Oakland, California in 1939. On 22 March 1939, the U.S. Lighthouse Tender Fir was launched. She was steam driven with twin screws, 175 feet (53 m) in length, had a beam of 32 feet (9.8 m), drew 11 feet 3 inches (3.43 m) of water, and displaced 885 tons. Fir was fitted with a reinforced bow and stern, and an ice-belt at her water-line for icebreaking. She was built with classic lines and her spaces were lavishly appointed with mahogany, teak, and brass. The crew did intricate ropework throughout the ship. The cost to build Fir was approximately US$390,000. Fir's homeport was Seattle, Washington for all but one of her fifty one years of service when she was temporarily assigned to Long Beach, California when USCGC Walnut was decommissioned on 1 July 1982.
USCGC Fir (WLB-213) is a Juniper-class cutter of the United States Coast Guard. USCGC Fir is under the Operational Control (OPCON) of the Commander of the Thirteenth Coast Guard District and is homeported in Astoria, Oregon. Fir's primary area of responsibility is the coastal waters, river bars and high seas of the Washingtonian and Oregonian coasts. USCGC Fir conducts heavy lift aids to navigation operations, law enforcement and other missions as directed.
USCGC Elm (WLB-204) is a U.S. Coast Guard Juniper-class seagoing buoy tender home-ported in Astoria, Oregon. She is responsible for maintaining aids to navigation on the coasts of Oregon and Washington, including the Columbia River.
USCGC Woodrush (WLB-407) was a buoy tender that performed general aids-to-navigation (ATON), search and rescue (SAR), and icebreaking duties for the United States Coast Guard (USCG) from 1944 to 2001 from home ports of Duluth, Minnesota and Sitka, Alaska. She responded from Duluth at full speed through a gale and high seas to the scene of the SS Edmund Fitzgerald sinking in 1975. In 1980, she took part in a rescue rated in the top 10 USCG rescues when she helped to save the passengers and crew of the cruise ship Prinsendam after it caught fire in position 57°38"N 140° 25"W then while being towed sank off Graham Island, British Columbia. She was one of the first vessels to respond to the Exxon Valdez oil spill in 1989. She was decommissioned on 2 March 2001 and sold to the Republic of Ghana to serve in the Ghana Navy.
USCGC Henry Blake (WLM-563) is a United States Coast Guard Keeper-class cutter based at Naval Station Everett in Everett, WA. Henry Blake's primary mission is the maintenance of 80 lighted, 39 unlighted, and 65 shore-based aids to navigation in the Puget Sound area and along the coast of Washington. Secondary missions include marine environmental protection, search and rescue, and homeland security. Henry Blake is assigned to the Thirteenth Coast Guard District.
The USCGC Willow (WLB-202) is a United States Coast Guard seagoing buoy tender, the third of her name and the second of the Juniper-class. She is home-ported in Charleston, South Carolina, where she replaced her sister ship USCGC Oak in servicing 257 aids to navigation in District 7. Willow's area of operations stretches from South Carolina down to Caribbean, including Puerto Rico, Cuba, U.S. Virgin Islands and Haiti. In addition to her primary aids-to-navigation (ATON) role, Willow also performs other duties, such as maritime border security, marine environmental protection, maritime law enforcement, and search and rescue. The Willow transitioned from her former home port of Newport, RI in 2017 after spending over a year in a Baltimore dry dock being refitted and modernized.
USCGC Ida Lewis (WLM-551) is the lead ship of the United States Coast Guard Keeper-class of Coastal Buoy Tenders. Launched in 1995, she has spent her entire career maintaining navigational aids near her homeport of Newport, Rhode Island. Ida Lewis is assigned to the First Coast Guard District.
USCGC Anthony Petit (WLM-558) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1999, she has served her entire career maintaining navigational aids in Southeast Alaska. She is assigned to the Seventeenth Coast Guard District.
USCGC Marcus Hanna (WLM-554) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1997, she is home-ported in South Portland, Maine. Her primary mission is maintaining 376 aids to navigation from Boston to St. John's Bay, Maine. Secondary missions include marine environmental protection, light icebreaking, search and rescue, and security. She is assigned to the First Coast Guard District.
USCGC Abbie Burgess (WLM-553) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1997, she is home-ported in Rockland, Maine. Her primary mission is maintaining 366 aids to navigation from Boothbay Harbor, Maine to the Canadian border. Secondary missions include marine environmental protection, light icebreaking, search and rescue, and security. She is assigned to the First Coast Guard District.
USCGC James Rankin (WLM-555) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1998, she is home-ported at the Coast Guard Yard in Baltimore, Maryland. Her primary mission is maintaining 361 aids to navigation in Upper Chesapeake Bay and its tributaries including the Eastern Shore of Maryland, the Potomac River, and the Annapolis area. Secondary missions include marine environmental protection, light icebreaking, search and rescue, and security. She is assigned to the Fifth Coast Guard District.
USCGC Frank Drew (WLM-557) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1998, she is home-ported in Portsmouth, Virginia. Her primary mission is maintaining over 300 aids to navigation in lower Chesapeake Bay, the rivers that flow into it, and a potion of the North Carolina Coast. Secondary missions include marine environmental protection, light icebreaking, search and rescue, and security. She is assigned to the Fifth Coast Guard District.
USCGC George Cobb (WLM-564) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1999, she is home-ported in San Pedro, California. Her primary mission is maintaining over 178 floating aids to navigation on the California coast from San Francisco to San Diego. Secondary missions include marine environmental protection, search and rescue, and security. She is assigned to the Eleventh Coast Guard District.
USCGC William Tate (WLM-560) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1999, she is home-ported in Philadelphia, Pennsylvania. Her primary mission is maintaining over 260 aids to navigation on the Delaware River, in Delaware Bay and in nearby waterways. Secondary missions include marine environmental protection, search and rescue, and security. She is assigned to the Fifth Coast Guard District.
USCGC Maria Bray (WLM-562) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1999, she is home-ported in Atlantic Beach, Florida. Her primary mission is maintaining over 300 aids to navigation from Georgetown, South Carolina to Fort Pierce, Florida. Secondary missions include marine environmental protection, search and rescue, and security. She is assigned to Sector Jacksonville of the Seventh Coast Guard District.
USCGC Harry Claiborne (WLM-561) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1999, she is home-ported in Galveston, Texas. Her primary mission is maintaining aids to navigation between the Mexican boarder and the mouth of the Mississippi River. Secondary missions include marine environmental protection, search and rescue, and security. She is assigned to the Eighth Coast Guard District.
USCGC Barbara Mabrity (WLM-559) is a Keeper-class coastal buoy tender of the United States Coast Guard. Launched in 1999, she is home-ported in Mobile, Alabama. Her primary mission is maintaining aids to navigation from western Florida to the Mississippi River. Secondary missions include marine environmental protection, search and rescue, and security. She is assigned to the Eighth Coast Guard District.