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Greece - Hellenic Navy Themistoklis / Kanaris class Destroyer (ex US Navy Allen M. Sumner class and Gearing class FRAM I and FRAM II Destroyers) |
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US Gearing FRAM II: D 210 HS Themistoklis (ex USS Frank Knox / DD 742) (1944/71) US Allen M. Sumner class : D 211 HS Miaoulis (ex USS Ingraham / DD 694) (1944/71) US Gearing FRAM I: D 212 HS Kanaris (ex USS Stickell / DD 888) (1945/72) D 213 HS Kountouriotis (ex USS Rupertus / DD 851) (1946/73) D 214 HS Sachtouris (ex USS Arnold J. Isbell / DD 869) (1946/73) D 215 HS Tombazis (ex USS Gurke / DD 783) (1945/77) D 216 HS Apostolis (ex USS Charles P. Cecil / DD 835) (1945/80) D 217 HS Kriezis (ex USS Corry / DD 817) (1946/81) |
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Length: 119 meters (390.5 feet)
(D 212 Miaoulis = 114,8 meters) Displacement: 2425 tons (standard) / 3550 tons (full load) (Miaoulis = 2200 / 3320 tons) Beam: 12,5 meters (40.9 ft) Draft: 5,8 meters (19 ft) Speed: 32 knots (59 km/h) Range: 4500 NM (8300 km) at 20 knots (37 km/h) Complement: 350 as designed - 270 in Hellenic service Propulsion: 4 x Babcock & Wilcox boilers 2 x General Electric steam turbines (60000 shp / 45 MW) 2 shafts, 2 propellers Armament (as built - US): 3 x 5"/38-caliber (127mm) twin guns 12 x Bofors 40mm AA guns 11 x Oerlikon 20mm AA guns 10 x 21" (533mm) torpedo tubes 6 x 'K-gun' depth charge projectors 2 x depth charge racks Armament (D 210 + 211 - Hellenic Navy service): 2-3 x Mk-38 5"/38-caliber twin guns 2 x Mk-32 triple torpedo tubes for Mk-44 or Mk-46 torpedoes 2 x Mk-10 'Hedgehog' anti-submarine mortar flight deck and hangar for 1 helicopter Armament (D 212 - 217 - Hellenic Navy service): 2 x Mk-38 5"/38-caliber twin guns 1 x Oto-Melara 76/62 gun (added later) 1 x Bofors 40/L70 40mm AA gun 1 x Mk-16 8-cell launcher for RUR-5 ASROC 2 x Mk-141 missile launcher for RGM-84 Harpoon SSM (some ships) 2 x Mk-32 triple torpedo tubes for Mk-44 or Mk-46 torpedoes 2 x Mk-10 'Hedgehog' anti-submarine mortar (removed later) |
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The Gearing class is a group of 98 destroyers built for the U.S.
Navy during and shortly after World War II. The Gearing design was a
minor modification of the immediately preceding Allen M. Sumner
class. The hull was lengthened 14 ft (4.3 m) amidships, creating
more storage space for fuel, thus giving the ships a longer
operating range than the Allen M. Sumners. Design: The first ship was laid down in August 1944, while the last was launched in March 1946. In that time the United States produced 98 Gearing-class destroyers. The Gearing class was a seemingly minor improvement of the previous Allen M. Sumner class, which were built from 1943 until 1945. The main difference was that the Gearings were 14 feet (4.3 m) longer in the midship section, allowing for increased fuel tankage for greater range, an important consideration in Pacific War operations. More importantly in the long run, the Gearings' increased size made them much more suitable for upgrades than the Allen M. Sumners, as seen in the wartime radar picket subclass, the 1950s radar picket destroyer (DDR) and escort destroyer (DDE) conversions, and the Fleet Rehabilitation and Modernization (FRAM) conversions 1960-65. As designed, the Gearings' armament was identical to that on the Allen M. Sumner class. Three twin 5-inch (127 mm)/38 caliber Mark 38 dual purpose (DP) mounts constituted the main battery. The 5-inch guns were guided by a Mark 37 Gun Fire Control System with a Mark 25 fire control radar linked by a Mark 1A Fire Control Computer stabilized by a Mark 6 8,500 rpm gyro. This fire control system provided effective long-range anti-aircraft (AA) or anti-surface fire. Twelve 40 mm guns in two quad and two twin mounts and 11 20 mm guns in single mounts were also equipped. The initial design retained the Sumners' heavy torpedo armament of 10 21" (533mm) tubes in two quintuple mounts, firing the Mark 15 torpedo. As the threat from kamikaze aircraft mounted in 1945, and with few remaining Japanese warships to use torpedoes on, most of the class had the after quintuple 21-inch (533 mm) torpedo tube mount replaced by an additional 40 mm quadruple mount (prior to completion on later ships) for 16 total 40 mm guns. 26 ships (DD-742-745, 805-808, 829-835, and 873-883) were ordered without torpedo tubes to allow for radar picket equipment; these were redesignated as DDRs in 1948. 1946-59 upgrades: Following World War II most of the class had their AA and anti-submarine warfare (ASW) armament upgraded. The 40 mm and 20 mm guns were replaced by 2-6 3-inch (76 mm)/50 caliber guns in up to two twin and one single mounting. One depth charge rack was removed and two Hedgehog ASW mortar mounts added. The K-guns were retained. Nine additional (for a total of 35) ships were converted to radar picket destroyers (DDR) in the early 1950s; these typically received only one 3-inch/50 caliber twin mount to save weight for radar equipment, as did the wartime radar pickets. Nine ships were converted to escort destroyers (DDE), emphasizing ASW. Carpenter was the most thorough DDE conversion, with 4 3-inch/70 caliber guns in twin enclosed mounts, two Weapon Alpha launchers, four new 21-inch torpedo tubes for the Mark 37 ASW torpedo, and one depth charge rack. FRAM I upgrade: In the late 1950s and early 1960s 78 of the Gearing-class destroyers underwent extensive modernization overhauls, known as FRAM I, which were designed to convert them from an anti-aircraft destroyer to an anti-submarine warfare platform. FRAM I removed all of the DDR and DDE equipment, and these ships were redesignated as DDs. FRAM I and FRAM II conversions were completed 1960-65. Eventually all but four Gearings received FRAM conversions. The FRAM I program was an extensive conversion for the Gearing-class destroyers. This upgrade included rebuilding the ship's superstructure, electronic systems, radar, sonar, and weapons. The second twin 5" gun mount and all previous AA guns and ASW equipment were removed. (On several ships the two forward 5-inch mounts remained and the aft 5-inch mount was removed.) Upgraded systems included SQS-23 sonar, SPS-10 surface search radar, two triple Mark 32 torpedo tubes, an 8-cell Anti-Submarine Rocket (ASROC) box launcher, and one QH-50C DASH ASW drone helicopter, with its own landing pad and hangar. Both the Mk 32 torpedo tubes and ASROC launched Mk 44 homing ASW torpedoes. ASROC could also launch a nuclear depth charge. On 11 May 1962, Agerholm tested a live nuclear ASROC in the "Swordfish" test. The Gyrodyne QH-50C DASH was an unmanned anti-submarine helicopter, controlled remotely from the ship. The drone could carry two Mk.44 homing ASW torpedoes. During this era the ASROC system had an effective range of only 5 nautical miles (9.3 km; 5.8 mi), but the DASH drone allowed the ship to deploy ASW attack to sonar contacts as far as 22 nautical miles (41 km; 25 mi) away. An upgraded version of DASH, QH-50D, remained in use by the United States Army until May 2006. FRAM II upgrade: The FRAM II program was designed primarily for the Sumner-class destroyers, but sixteen Gearings were upgraded as well. This upgrade program included life-extension refurbishment, a new radar system, Mark 32 torpedo tubes, DASH ASW drone, and variable depth sonar (VDS). Importantly, it did not include ASROC. FRAM II ships included six DDRs and six DDEs that retained their specialized equipment (1960–61), as well as four DDRs that were converted to DDs and were nearly identical to the Allen M. Sumner-class FRAM IIs (1962–63). The FRAM II ships retained all six 5-inch guns, except the DDEs retained four 5-inch guns and a trainable Hedgehog in the No. 2 position. All FRAM IIs retained two Hedgehogs alongside either the No. 2 5-inch mount or the trainable Hedgehog mount. The four DDRs converted to DDs were armed with two new 21-inch torpedo tubes for the Mark 37 ASW homing torpedo. Photographs of the six retained DDRs show no markings on the DASH landing deck, as well as a much smaller deckhouse than was usually provided for DASH, so they may not have been equipped with DASH. The ships were modified and upgraded after their transfer to Greece. source: wikipedia |
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 D210 HS Themistoklis (with flight deck and hangar)  D 211 HS Miaoulis (with flight deck and hangar) D 212 HS Kanaris (with Mk-32 torpedo tubes, Mk-16 ASROC launcher, Mk-141 HARPOON launcher & Oto-Melara 76/62 gun)  D 212 HS Kanaris (with Mk-32 torpedo tubes, Mk-16 ASROC launcher, Mk-141 HARPOON launcher & Oto-Melara 76/62 gun)  D 213 HS Kountouriotis (with Mk-32 torpedo tubes, Mk-16 ASROC launcher, Mk-141 HARPOON launcher & Oto-Melara 76/62 gun)  D 214 HS Sachtouris (with Mk-32 torpedo tubes, Mk-141 HARPOON launcher & Oto-Melara 76/62 gun)  D 215 HS Tombazis  D216 HS Apostolis  D 217 HS Kriezis 
 Themistoklis - Miaoulis - Kanaris 
 Kountouriotis - Sachtouris - Tombazis 
 Apostolis - Kriezis  armament details  details - 2 x Mk-38 5"/38 twin guns - with flight deck and hangar - no Mk-16 ASROC and Mk-141 HARPOON launchers  DD 742 USS Frank Knox / later D 210 HS Themistoklis  DD 742 USS Frank Knox / later D 210 HS Themistoklis  DD 694 USS Ingraham / later D 211 HS Miaoulis  DD 694 USS Ingraham / later D 211 HS Miaoulis  DD 888 USS Stickell / later D 212 HS Kanaris  DD 851 USS Rupertus / later D 213 HS Kountouriotis  DD 869 USS Arnold J. Isbell / later D 214 HS Sachtouris  DD 783 USS Gurke / later D 215 HS Tombazis  DD 835 USS Charles J. Cecil / later D 216 HS Apostolis  DD 817 USS Corry / later D 217 HS Kriezis  DD 829 USS Myles C. Fox - sold to Greece for spare parts  DD 880 USS Dyess - sold to Greece for spare parts |
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