Tag Archives: mine sweeper

Modular Mine Laying Cube

The Baltic probably has more sea mines along its bottom than any other body of water in the world. It is estimated that there are 80,000 live mines left over from the two World Wars in the ancient sea, a legacy that has kept NATO MCM flotillas regularly employed every summer.

But of course, going beyond minesweeping and hunting, the narrow seas, craggy coastline, and shallow depths of the Baltic make it ideal for the employment of such weapons and most of the countries that border it or operate upon its waves have some sort of plan for their own use of mines in a future conflict.

With that, it should come as no surprise that this little piece of bolt-on kit is being advertised and developed by a Baltic consortium based in Denmark and Finland, to both store and very rapidly deploy (when needed) modern sea mines.

Via Danish SH Defence, in cooperation with the Finnish DA-Group and FORCIT Defence companies:

SH Defence, Denmark; DA-Group and FORCIT DefenceOY AB, both located in Finland, have signed a multiparty Memorandum of Understanding (MOU) to corporate and jointly explore the potential in the development of launching, laying, and storing sea mines designed by and manufactured by DA-Group and FORCIT, such as but not limited to the BLOCKER and TURSO sea mines, into the Containerized Multi-Mission Module system called The Cube™ System.

The cooperation will be based on SH Defence’s modular mission concept, The Cube™ System with associated handling equipment, and will include design and conception; supported with DA-Group patented modular SUMICO naval minelaying concept. 

Lars Gullaksen, Area Sales Director, SH Defence, said: “The Cube™ System from SH Defence is rapidly becoming the standard within modularization of maritime mission capabilities for naval, coastguard, and SAR vessels around the world, especially within NATO and around the Baltic Sea. Hence our motto The Cube – changing the game at sea.

Modern naval vessels must be capable of carrying out different missions and roles both in peacetime and wartime. Therefore, the easy and rapid exchange of capabilities is an increasing requirement for new buildings and the retrofit of naval vessels.” 

He continued: “The Cube™ System, currently available with more than 300 different payloads from approximately 160 vendors, offers a flexible and cost-efficient solution that enables reconfiguration of a vessel in only a few hours. 

This partnership with DA-Group and FORCIT allows us to jointly develop the multi-mission capabilities and expand the portfolio of payloads to include the most modern sea mines for the adaptability of both Scandinavian, NATO, and other foreign navies.” 

Kristian Tornivaara, Chief Business Officer at DA-Group Defence and Aerospace, said: “We are excited to start the collaboration with SH Defence. They are now taking real action and provide world navies the future-proof modular solution for naval minelaying. We have been working with sea mines and mission modularity for years and we have seen the need for such a system. This is also the reason for SUMICO patent, which now can be utilized in Cube System to enhance navies’ operational capabilities and flexibility.”

Hannu Hytti, Executive Vice President, Forcit Defence, said: “Forcit Defence has been developing and manufacturing modern naval mines since 1988. Recent developments in the security environment have emphasized the importance of sea denial and naval mine capabilities. With this partnership with SH Defence and DA Group we are able to provide world class full spectrum naval capabilities for maritime defence.

Warships in Nebraska

It’s odd to find a submarine or a minesweeper out on the Great Plains but such an example exists at Omaha, Nebraska’s Freedom Park which has long had custody over the old WWII-era (3 Battle Stars) Admirable-class minesweeper USS Hazard (AM-240) and the downright cute Cold War-era T-1-class training submarine USS Marlin (SST-2) since 1971 and 1974, respectively.

Typically high and dry hundreds of miles from blue water, they are now seemingly ready to set sail once more as the Missouri River has crested.

(Nati Harnik/AP)

Hopefully, the water will not get too high there. The park closed as a result of flooding along the Missouri River in 2011 and took four years of restoration and cleanup work to reopen.

From Freedom Park: “We learned much from 2011, & had many discussions of what to do if; so with hi-water predicted again, precautions were done today, in minimum time. Thanks to big-time support from Omaha Parks Dep’t. Since the ship, thanx to 2011, is a good 6 ft. higher than before, it will take water more than 2011 to put her afloat. Not that much predicted. So she’s not going anywhere”

Good deal on slightly used minesweepers, some assembly required

If you are in the market for some pre-owned warships, the Royal Australian Navy wants to make a deal. Working through a commercial service, the Navy advertised the HMAS Hawkesbury and HMAS Norman for sale “Sold As Is Where Is.”

The 172-foot long mine hunters have composite hulls designed to “flex inwards if an undersea explosion occurs nearby,” which is always a good thing.

HMAS Hawkesbury left, and HMAS Norman are Huon-class coastal mine hunters commissioned in 2000. They have been in reserve for the past seven years. (Photo: Royal Australian Navy)

Built in 2000 as part of a six-ship class to an Italian design (Lerici-class, the same as the U.S. Navy’s short-lived Osprey-class MHCs) both Hawkesbury and Norman were laid up in 2011 and have been in storage ever since while the other four ships have remained with the fleet.

Sadly, it looks like their DS30B 30mm Bushmaster cannons and M2 .50-cal machine guns have been removed, but the vendor offering them for sale suggests they could be turned into luxury yachts or charter vessels.

The vendor suggests they could be converted to charter vessels or yachts. (Photo: Grey Online)

Not mentioned is a Jacques Cousteau/Steve Zissou-style recycle.

No price is listed but the vendor, Grays Online, does caution that the ships have had their shafts and propellers removed and would have to be towed off by the buyer, saying, “inspection is highly recommended.”

The sweepers Pelican 1917-2007, and no, that is not a bar of soap

The name “Pelican” in honor of the large and rather dopey seabird, has always been carried by a mine warfare vessel in the U.S. Navy.

USS PELICAN (AM-27) Caption: With PN-9 #1 on her fantail, after the unsuccessful San Francisco to Hawaii flight in early September 1925. The ship is going to Pearl Harbor Hawaii. Description: Catalog #: NH 44902

The first, AM-27/AVP-6, was a Lapwing-class minesweeper laid down 10 November 1917 at Gas Engine and Power Co., Morris Heights, New York. Commissioned a month prior to Armistice Day, she helped with the sweeping of the North Sea Mine Barrage and was almost blown sky high when a chain of six British mines exploded all around her on 9 July 1919. Heroically saved by her crew and responding ships, the beaten Pelican limped to Scapa and was repaired. Later converted to a seaplane tender, she served in both the Atlantic and Pacific in WWII (including work as a “Tuna boat” Q-ship) before being sold for scrap in November 1946 after 29 years service.

USS Pelican via Navsource

The second Pelican, (MSC(O)-32/AMS-32/YMS-441) was a YMS-1-class minesweeper built at Robert Jacob Inc. City Island, New York. Commisoned with a hull number only in 1945, she assumed Pelican‘s vacant moniker 18 February 1947. She supported the Eniwetok atomic bomb tests and then saw extensive service in the Korean War, including helping to clear the heavily mined port of Chinnampo. Taken out of service in 1955, she was loaned to Japan as the JDS Ogishima (MSC-659) for 13 years before striking in 1968.

The third Pelican, MHC-53, is an Osprey-class coastal minehunter built at the now-defunct Avondale Shipyard, Gulfport, Mississippi, launched 24 October 1992 and commisoned 18 November 1995. Based on the 164-foot Italian Lerici-class minehunters designed by Intermarine SpA in the early 1980s, and built in variants for Algeria, Finland, Malaysia, Nigeria, Australian and Thailand, the Osprey‘s were a good bit larger, at 188-feet overall but could float in just seven feet of water, enabling them to perform littoral sweeping and clear mines from inland waterways.

Below is a slice of her hull sandwich that I have, a two-inch-thick piece of green soap-colored carbon fiber-reinforced polymer resin that has the consistancy of a brick– and is non-magnetic.

The Osprey-class were the largest vessels built at the time, save for the eight-foot longer HMS Hunt-class minehunters, to have fiberglass hulls. This may have been surpassed since then by a mega yacht or two, but I doubt it as most of those are steel hulled.

While most countries still use their Lerci-class vessels (31 are afloat worldwide and Taiwan is building six more by 2023) the 12 Ospreys, after spending their time in the Reserves, were decommissoned 2006-2007 while still relatively young. Eight low-mileage Ospreys had either been transferred to or marked for transfer to other navies: two each to the Hellenic (Greek) Navy, Lithuanian Navy, Egyptian Navy, and Republic of China (Taiwan) Navy, anf four scrapped (!)

Pelican, struck from the Naval Register 16 March 2007, was commisoned by the Greeks as HS Evniki (M61) the same day, and she continues in active service.

Evinki, in the Corinth Canal that connects the Gulf of Corinth with the Saronic Gulf in the Aegean Sea. The rock walls, which rise 300 ft. above sea level, are at a near-vertical 80° angle.

Warship Wednesday Nov. 23, 2016: A long overdue Salute

Here at LSOZI, we are going to take off every Wednesday for a look at the old steam/diesel navies of the 1859-1946 time period and will profile a different ship each week. These ships have a life, a tale all of their own, which sometimes takes them to the strangest places. – Christopher Eger

Warship Wednesday Nov. 23, 2016: A long overdue Salute

Courtesy of D. M. McPherson, 1974. Catalog #: NH 81370

Courtesy of D. M. McPherson, 1974. Catalog #: NH 81370

Here we see the Admirable-class minesweeper USS Salute (AM-294) photographed sometime in 1944. Although she gave her last measure too soon after, her memory and relics endure.

The U.S. Navy has a long history of minesweeping, having lost the first modem ships to those infernal torpedoes in the Civil War. As a byproduct of Mr. Roosevelt’s Great North Sea Mine Barrage of the Great War, the Navy commissioned their first class of minesweepers, the Lapwing or “Old Bird” type vessels which lingered into WWII, followed by 1930s-era 147-foot three-ship Hawk-class and the much larger 220-foot Raven and Auk-classes early in the first days of that second great international hate.

In early 1941, the Navy set its sights on a hybrid class of new steel-hulled oceangoing sweepers built with lessons learned from their previous designs, that of a 180-foot, 750-ton vessel that could both clear mines and, by nature of their forward and aft 3″/50 guns, provide a modicum of escort support. Since they could float in 9’9″ of water, they were deemed coastal minesweepers at first.

Preliminary design plan, probably prepared during consideration of what became the Admirable (AM-136) class. This drawing, dated 2 May 1941, is for a 750-ton (full load displacement) vessel with a length of 180 feet. Scale of the original drawing is 1/8" = 1'. The original plan is in the 1939-1944 "Spring Styles Book" held by the Naval Historical Center U.S. Navy photo S-511-34

Preliminary design plan, probably prepared during consideration of what became the Admirable (AM-136) class. This drawing, dated 2 May 1941, is for a 750-ton (full load displacement) vessel with a length of 180 feet. Scale of the original drawing is 1/8″ = 1′. The original plan is in the 1939-1944 “Spring Styles Book” held by the Naval Historical Center U.S. Navy photo S-511-34

First of the class of what would eventually turn into orders for 147 ships (of which 123 were completed) was USS Admirable laid down as AMc-113, 8 April 1942 in Tampa, Florida.

Another 68 craft, sans mine gear, were completed as PCE-842-class patrol craft.

The hero of our tale– the first to carry her name– USS Salute (AM-294) was laid down 11 November 1942 at Winslow Marine Railway and Shipbuilding Co, Seattle, WA. Commissioned 4 December 1943 with LT Raymond Henry Nelson, Jr., USNR, in command, the addition of ASW gear and an AAA suite (though one of the original design’s 3-inchers were deleted) raised her displacement to 945 tons fully loaded but gave her some defense against Japanese subs and planes.

On board Salute on her builder's trials, note the Winslow Marine flag from her deckhouse

On board Salute on her builder’s trials, note the Winslow Marine flag from her wheelhouse

Salute on trials from Winslow

Salute on trials from Winslow

uss-salute-am-294-built-in-november-1942-by-winslow-marine-railway-and-shipbuilding-co
According to DANFS, she spent most of 1944 working out of Hawaii escorting convoys between Pearl Harbor, Majuro, Kwajalein, Eniwetok, Guam, and Saipan. It was in this work that she picked up her distinctive camo scheme in March 1944.

uss-salute-puget-sound

With LT Jesse Robert Hodges, USNR, assuming command in June, Salute reported to the 7th Fleet at Manus on 8 October 1944 for the Leyte invasion.

Working with her sisters in Mine Division 34 off the Leyte beaches, she helped clear the landing areas and provide cover fire from Japanese air attacks then combed the waters for survivors of the great Battle off Samar.

Between November 1944 and April 1945, a period of just over six months, Salute conducted dangerous pre-invasion sweeps at Ormoc Bay, Mindoro Island, Subic, the Lingayen Gulf, Zambales, Mariveles and off Corregidor in Manila Bay, the Sulu Sea off Palawan, and off the beaches of Legaspi– often while under fire from shore batteries and dodging kamikazes.

It’s not hard to see how she earned five battle stars for her World War II service. She reportedly cleared 143 Japanese naval mines during the Philippines Campaign.

On 9 May, Salute arrived at Morotai to prepare for operations in the Netherlands East Indies (today’s Indonesia).

It was in that chain that, while sweeping off Brunei Bay, Borneo, on 7 June 1945, she struck a mine, which broke the tiny ship’s back. Landing craft came alongside in an attempt to prop up the rapidly swamping ship, but her hull had taken fatal damage and within minutes, her crew was ordered off the ship. Once clear, the lines holding Salute to the landing craft were cut and she was cast loose into the bay where she quickly swamped, broke in two, and sank, her bow coming to rest over her stern.

salute-wreckFrom a report by Lt. James J. Hughes, an officer aboard Salute who survived the explosion:

“The ship was hit mid-ship, right underneath the belly, and it came right up through all the decks,” said Hughes. “Anybody in that area was killed, especially in the engine room; they didn’t have a chance. We hit it about 4:00 in the afternoon and sunk about midnight. We were making the last run of the day.”

Salute suffered nine crewmembers killed or missing and two officers and eight enlisted wounded with the War Department reporting her loss on June 26. She was struck from the Naval Register 11 July 1945.

Located in 90 feet of water at 5° 08’N, 115° 05’E, over the years she became a popular dive site after the Malaysian navy removed her unexploded depth charges, which brings us to recent developments.

Navy divers from Mobile Diving and Salvage Unit (MDSU) 1 along with Royal Brunei navy personnel dove on Salute from USNS Salvor (T-ARS-52), located in 90 feet of water, over a three-day period earlier this month.

The diving operations were the first by the U.S. Navy on the wreckage of Salute and were conducted as part of Cooperation Afloat Readiness and Training (CARAT) 2016.

“These operations provided U.S. Navy divers a unique opportunity to work alongside our Bruneian counterparts on a very meaningful project,” said Lt. Chris Price, detachment officer-in-charge, MDSU 1. “We are preserving our Navy’s rich history and heritage, and giving a very fitting remembrance to these fallen Sailors.”

USS SALUTE (November 16, 2016) U.S. Navy Divers attached to Mobile Diving & Salvage Company ONE divers serving with the Royal Brunei Armed Forces gather for a group photo at the wreckage site of USS Salute (AM-294), which sank in Brunei waters on June 7, 1945, during Cooperation Afloat Readiness and Training (CARAT) Brunei 2016, Nov. 15. CARAT is a series of annual maritime exercises between the U.S. Navy, U.S. Marine Corps and the armed forces of nine partner nations to include Bangladesh, Brunei, Cambodia, Indonesia, Malaysia, the Philippines, Singapore, Thailand, and Timor-Leste. (U.S. Navy photo by Lt. Chris Price/RELEASED)

USS SALUTE (November 16, 2016) U.S. Navy Divers attached to Mobile Diving & Salvage Company ONE divers serving with the Royal Brunei Armed Forces gather for a group photo at the wreckage site of USS Salute (AM-294), which sank in Brunei waters on June 7, 1945, during Cooperation Afloat Readiness and Training (CARAT) Brunei 2016, Nov. 15. CARAT is a series of annual maritime exercises between the U.S. Navy, U.S. Marine Corps and the armed forces of nine partner nations to include Bangladesh, Brunei, Cambodia, Indonesia, Malaysia, the Philippines, Singapore, Thailand, and Timor-Leste. (U.S. Navy photo by Lt. Chris Price/RELEASED)

USS SALUTE (November 16, 2016) U.S. Navy Divers attached to Mobile Diving and Salve Unit ONE place a memorial plaque at the wreckage site of USS Salute (AM-294) which sank in Brunei waters on June 7, 1945, during Cooperation Afloat Readiness and Training (CARAT) Brunei 2016, Nov. 16. (U.S. Navy photo by Lt. Chris Price/RELEASED)

USS SALUTE (November 16, 2016) U.S. Navy Divers attached to Mobile Diving and Salve Unit ONE place a memorial plaque at the wreckage site of USS Salute (AM-294) which sank in Brunei waters on June 7, 1945, during Cooperation Afloat Readiness and Training (CARAT) Brunei 2016, Nov. 16. (U.S. Navy photo by Lt. Chris Price/RELEASED)

Four artifacts– a gas mask, a glass inkwell, and two pieces of china: a larger plate and a smaller plate– were recovered and are being assessed for preservation.

161109-n-th437-008 161109-n-th437-029-1024x682 161109-n-th437-056-1024x682

From a NHHC Underwater Archaeology Branch release:

However, the four pieces are not all in the greatest of condition—the mask especially—and because of the aquatic environment they spent the last 71 years in, they will all require specialized conservation treatment. Conservation is a main component of any underwater archaeology program since artifacts recovered from submerged archaeological sites require special preservation care.

Besides the recent attention, Salute is remembered by a veteran’s website that hosts crew reunion information. In 1995 the group placed a wreath on her wreck during the 50th anniversary of the liberation of Labuan.

Her name was recycled for an Aggressive-class ocean minesweeper USS Salute (MSO-470) commissioned on 4 May 1955. She famously helped look for a lost H-bomb off Spain in 1966 and continued to serve until 1971 when she was broken up prematurely.

The U.S. Navy minesweeper USS Salute (MSO-470) at Luders Marine Construction Co., Stamford, Connecticut (USA), in January 1955.

The U.S. Navy minesweeper USS Salute (MSO-470) at Luders Marine Construction Co., Stamford, Connecticut (USA), in January 1955.

The latter Salute‘s engineering plans are preserved in the National Archives and she was the last to carry the name on the Navy List.

Speaking of plans, the Admirable-class sweepers have been a very popular model over the years:

lindberg-1-130-uss-sentry-am-299-admirable-class-wwii-us-navy-minesweeper

As for Salute‘s Admirable-class sisters, 24 were given to the Soviets in 1945 and never returned, others remained in use by the Navy through the Korean War era, and some were later passed on to the Taiwan, South Korea, the Republic of Vietnam, and the Dominican, Mexican, Myanmar, and Philippine navies.

At least five PCE-842/Admirable-class ships remain in nominal service as patrol craft with the Philippines including BRP Magat Salamat (PS-20), formerly USS Gayety (AM-239), shown below.

Since 1993, the only Admirable-class vessel left above water in the U.S. is USS Hazard (AM-240).

Now a National Historic Landmark, she was retired in 1971 and, put up for sale on the cheap:

1971-newspaper-ad-for-the-disposal-of-uss-hazard-msf-240-an-admirable-class-minesweeper-of-the-wwii-us-navy

Hazard was installed on dry land at Freedom Park on the Missouri River waterfront in East Omaha where she is open to the public.

Please visit her.

hazard-buried-in-freedom-park

According to the NPS:

The ship was transferred to Omaha with all of her spare parts and equipment intact. The only equipment missing from USS Hazard is the minesweeping cable. All equipment (radio, engines, ovens, electrical systems, plumbing) is fully operational. USS Hazard still retains its original dishes, kitchen utensils, and stationery. USS Hazard is one of the best preserved and intact warships remaining from World War II. USS Hazard is a virtual time capsule dating from 1945.

Specs:

Image by shipbucket

Image by shipbucket

Displacement: 945 t (fl)
Length:     184 ft. 6 in (56.24 m)
Beam:     33 ft. (10 m)
Draft:     9 ft. 9 in (2.97 m)
Propulsion:
2 × Cooper Bessemer GSB-8 diesel engines
National Supply Co. single reduction gear
2 shafts
Speed:     14.8 knots
Complement: 104
Armament:
1 × 3″/50 caliber gun
1 × twin Bofors 40 mm guns
6 × Oerlikon 20 mm cannons
1 × Hedgehog anti-submarine mortar
4 × Depth charge projectors (K-guns)
2 × Depth charge tracks

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