MACKINAW USCGC icebreaker-buoy-tender

Built as a icebreaker-buoy-tender under yard no 601 by Marinette Marine Corporation (MMC), Marinette, USA for the USA Coastguard.

Laid down: February 09, 2004.
Launched: April 2, 2005 under the name USCGC MACKINAW (WLBB-30), the name Mackinaw has its roots in the ancient Native American language of the Great Lakes. Specifically, it is derived from the word Michilimackinac in the Ojibwa language, meaning "Island of the Great Turtle." Both Mackinaw (the English derivation) and Mackinac (the French derivation where "ac" is pronounced "aw") are derived from this word and pronounced Mak'ino.
Displacement 3,500 ton, dim. 73 x 17.8 x 4.9m. (draught), length bpp. 69.9m.
The ship is powered by 3 Caterpillar Turbocharged V-12 engines that drive 2 ABB electric propulsion drives that deliver a combined 9,200 horsepower. They are Caterpillar 3612 engines, turning Kato Generators. Mackinaw has 3 MDG’s. Each producing about 3.5 Megawatts of electric power. Mackinaw has an integrated electric plant. This means that the main generators provide electric power for both propulsion (ABB Azipods) and ship’s electric services (everything else). Speed 16 knots.
Crew 9 officers and 46 enlisted.
Commissioned: June 10, 2006, Homeport: Cheboygan, Michigan IMO No 9271054.

WLBB: The W preceding the number of all Coast Guard ships since World War II signifies them as Coast Guard vessels. WLB is the Coast Guard’s designation for seagoing buoy-tenders. The L stands for load-bearing working boat, and the B specifies its size category (big). The LB designates this vessel as a big buoy-tender, and the last B stands for icebreaker.

USCGC MACKINAW (WLBB-30) is a 240-foot (73 m) vessel built as a heavy icebreaker for operations on the North American Great Lakes for the United States Coast Guard. IMO number: 9271054. She should not be confused with a namesake ship, the USCGC MACKINAW (WAGB-83), IMO number 6119534, which was decommissioned on June 10, 2006.
MACKINAW was delivered to the Coast Guard on November 18, 2005 and commissioned on June 10, 2006. In addition to her ice-breaking duties, the MACKINAW will also serve as an Aids to Navigation ship, able to perform the same duties as the Seagoing Buoy Tenders (WLB) of the Coast Guard fleet. Further, she can conduct law enforcement and search and rescue missions and can deploy an oil skimming system to respond to oil spill situations and environmental response. One of the MACKINAW's unique features in the US Coast Guard fleet is the use of two Azipod units, ABB's brand of electric azimuth thrusters, for her main propulsion. These, coupled with a 550 hp (410 kW) bow thruster, make the ship exceptionally maneuverable. The Azipod units also remove the need for a traditional rudder, as the thrusters can turn 360 degrees around their vertical axis to direct their thrust in any direction. The MACKINAW also lacks a traditional ship's steering wheel. Much of the ship’s technology, including the Azipod thrusters, is from Finnish Maritime Cluster. Additionally, the MACKINAW can continuously proceed through fresh water ice up to 32 inches (81 cm) thick at 3 knots or 14 inches (36 cm) at 10 knots. She can also break smooth, continuous ice up to 42 inches (107 cm) thick through ramming.

The MACKINAW got off to a rocky start before being commissioned. While en-route to her new home port of Cheboygan, Michigan, the MACKINAW struck a seawall in Grand Haven, Michigan on December 12, 2005. The accident caused a 10-foot (3.0 m) dent in the bow of the MACKINAW on her starboard side. Shortly after the accident, Captain Donald Triner, the commanding officer of the MACKINAW, was temporarily relieved of duty pending an investigation into the accident. The accident did not delay the ship's scheduled arrival in her new home port; she arrived on December 17, 2005. Captain Triner was later permanently relieved of duty and replaced by Captain Michael Hudson, who was replaced in turn by Commander John Little in April 2006. CDR Scott J. Smith assumed command in July 2008 and was relieved by CDR Michael J. Davanzo in Aug, 2011. In June 2014, CDR Vasilios Tasikas assumed command. In June 2017, CDR John Stone assumed command. The MACKINAW is stationed at Cheboygan, Michigan. It can be seen and toured at Grand Haven's Coast Guard Festival every summer. The ship was also featured on the television series Modern Marvels. Katmai Bay, stationed at Sault Ste. Marie, Michigan, helps the USCGC MACKINAW (WLBB-30) in ice breaking duties.
2019 In service.
https://en.wikipedia.org/wiki/USCGC_Mackinaw_(WLBB-30) en internet.
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In the margin you see a freefall lifeboat and a helicopter picking up survivors. I have been sailing on ships fitted with a freefall lifeboat and in my eyes she are the best system for a lifeboat to get safely and very quickly of a vessel.

Wikipedia gives for the freefall lifeboat:
Some ships have a freefall lifeboat stored on a downward sloping slipway normally on the stern of the vessel. These freefall lifeboats drop into the water when the holdback is released. Such lifeboats are considerably heavier as they are strongly constructed to survive the impact with water. Freefall lifeboats are used for their capability to launch nearly instantly, and high reliability in any conditions. Since 2006 they have been required on bulk carriers that are in danger of sinking too rapidly for conventional lifeboats to be released. Seagoing oil rigs are also customarily equipped with this type of lifeboat.

https://en.wikipedia.org/wiki/Lifeboat_(shipboard)
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DELFIN project 667 BDRM submarine

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DELFIN project 667 BDRM submarine

Postby aukepalmhof » Fri May 10, 2019 9:35 pm

2014 DEL'PHIL Projecr 667 BDRM (2).jpg
Click image to view full size
On the stamp is given DEL’PHIN.

The seven boats were all built on the Severodvinsk Shipyard for the Navy of the Soviet Union.
Commissioned from 1984 till 1990.
Displacement13,500 ton surfaced and 18,200 ton submerged, dim. 166 x 12.3 x 8.8m. (draught)
Powered by two pressurized water-cooled reactors powering two steam turbines with two fixed-pitched shrouded propellers. Speed surfaced, 14 knots, submerged 24 knots.
Armament 16 missiles and 4 - 533mm bow torpedo tubes.
Crew 135.

Seven Delta IV-class submarines were built; all are still in service in the Russian Navy. The submarines, based at the Sayda Guba Naval Base, operate in the Northern Fleet. The Severodvinsk Shipyard built these vessels between 1981 and 1992. The last vessel was K-407 Novomoskovsk.
The design of the Delta IV class resembles that of the Delta III class and constitutes a double-hulled configuration with missile silos housed in the inner hull.
The submarine has an operational diving depth of 320 meters (1,050 ft), with a maximum depth of 400 meters (1,300 ft). The propulsion system allows speeds of 24 knots (44 km/h) submerged using two VM-4 pressure water reactors rated at 180 MW. It features two turbines of type GT3A-365 rated at 27.5 MW. The propulsion system drives two shafts with fixed-pitch propellers.

On 29 December 2011, a shipyard fire broke out in the drydock where a Delta IV-class vessel named YEKATERINBURG was being serviced. It was reported that the fire managed to spread to the submarine, that all weapons were disembarked from the submarine and the nuclear reactor was shut down beforehand

Overall design
The submarine design is similar to that of Delta III class (Project 667 BDR). The submarine constitutes a double-hulled configuration with missile silos housed in the inner hull. The forward horizontal hydroplanes are arranged on the sail. They can rotate to the vertical for breaking through the ice cover. The propulsion system provides a speed of 14 knots (26 km/h; 16 mph) surfaced and 24 knots (44 km/h; 28 mph) submerged. The submarine carries supplies for an endurance of 80 days. The surface of the submarine has an acoustic coating to reduce the acoustic signature. During the development of the 667BDRM SSBN several measures were included to reduce its noise level. The gears and equipment are located on a common base isolated from the pressure hull, and the power compartments are also isolated. The efficiency of the anti-hydroacoustic coatings of the light outer hull and inner pressure hulls have been increased. Newly designed propellers with improved hydroacoustic characteristics are employed.

Armament
The Delta IV-class submarines employs the D-9RM launch system and carries 16 R-29RMU Sineva liquid-fueled missiles which each carry four independently targetable reentry vehicles (MIRVs). Unlike previous modifications, the Delta IV-class submarine is able to fire missiles in any direction from a constant course in a circular sector. The underwater firing of the ballistic missiles can be conducted at a depth of 55 meters (180 ft) while cruising at a speed of 6–7 knots (11–13 km/h; 6.9–8.1 mph). All the missiles can be fired in a single salvo.
The 667BDRM Delphin submarines are equipped with the TRV-671 RTM missile-torpedo system that has four torpedo tubes with a calibre of 533 mm (21 in). Unlike the Delta III-class design, it is capable of using all types of torpedoes, antisubmarine torpedo-missiles and anti-hydroacoustic devices. The battle management system Omnibus-BDRM controls all combat activities, processing data and commanding the torpedo and missile-torpedo weapons. The Shlyuz navigation system provides for the improved accuracy of the missiles and is capable of stellar navigation at periscope depths. The navigational system also employs two floating antenna buoys to receive radio-messages, target destination data and satellite navigation signals at great depth. The submarine is also equipped with the Skat-VDRM hydroacoustic system.

The Delta IV-class submarines are strategic nuclear missile submarines designed to carry out strikes on military and industrial installations and naval bases. The submarine carries the RSM-5 Makeyev (NATO reporting name: SS-N-23 Skiff) submarine-launched ballistic missile (SLBM). The RSM-54 is a three-stage liquid-propellant ballistic missile with a range of 8,300 km (5,200 mi). The warhead consists of four to ten multiple, independently targeted re-entry vehicles (MIRVs) each rated at 100 kilotonnes of TNT (420 TJ). The missile uses stellar inertial guidance to provide a circular error probable (CEP) of 500 m (1,600 ft). The CEP value is a measure of the accuracy of strike on the target and is the radius of the circle within which half the strikes will impact.
The submarine is also capable of launching the Novator SS-N-15 Starfish anti-ship missile or anti-ship torpedoes. Starfish is armed with a nuclear warhead and has a range of up to 45 km (28 mi). The submarine has four 533 mm torpedo tubes capable of launching all types of torpedoes, including anti-submarine torpedoes and anti-hydroacoustic devices. The system is fitted with a rapid reloading torpedo system. The submarine can carry up to 12 missiles or torpedoes. All torpedoes are accommodated in the bow section of the hull.
In 2011 K-84 EKATERINBURG successfully tested a new version of the SS-N-23 missile, reportedly designated R-29RMU2 Layner. The missile has improved survivability against anti-ballistic missiles. Later on K-114 TULA conducted another successful launch.

Deployment
Initially all the Delta IV-class submarines were based with the Russian Northern Fleet at Olenya Bay. All the submarines of this class serve in 12th Squadron (the former 3rd flotilla) of strategic submarines of the Northern Fleet, which now located in Yagelnaya Bay.

2019 Six boats of this class are still in active service.

https://en.wikipedia.org/wiki/Delta-cla ... DRM_Delfin)_7_boats
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Re: DELFIN project 667 BDRM submarine

Postby 1143Minsk » Sun May 26, 2019 5:11 pm

Hello! I'm new to this forum, I hope I don't use it incorrectly.
It's interesting to see that so many ship themed stamps come from African countries, some having even no coastline, like Rwanda; is there a known reason for that? I swear that at least two out of three stamps about warships come from African countries.
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Re: DELFIN project 667 BDRM submarine

Postby john sefton » Tue May 28, 2019 6:23 pm

The reason these stamps are issued is to make money, no other reason. Unfortunately there are so many new issues there is a danger that it will destroy the hobby of stamp collecting.
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Re: DELFIN project 667 BDRM submarine

Postby 1143Minsk » Wed May 29, 2019 4:06 pm

Okay, so they just found something cool to slap on the stamps and went with it? I just thought they'd go, like most other countries, with themes related to their countries, be it history, fauna and flora, arts...
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