.jpg) Marcílio Dias, 1975 | |
| Class overview | |
|---|---|
| Name | Marcílio Dias class |
| Builders | Consolidated Steel Corporation |
| Operators |  Brazilian Navy |
| Preceded by | Pará class (1959) |
| Succeeded by | Pará class (1989) |
| Built | 1944–1945 |
| In commission | 1973–1997 |
| Planned | 2 |
| Completed | 2 |
| Retired | 2 |
| General characteristics | |
| Type | Destroyer |
| Displacement | |
| Length | 390.5 ft (119.0 m) |
| Beam | 40.9 ft (12.5 m) |
| Draft | 14.3 ft (4.4 m) |
| Installed power |
|
| Propulsion | |
| Speed | 36.8knots (68.2 km/h; 42.3 mph) |
| Range | 4,500 nmi (8,300 km; 5,200 mi) at 20 kn (37 km/h; 23 mph) |
| Complement | 350 as designed |
| Sensors & processing systems | |
| Electronic warfare & decoys | |
| Armament |
|
| Aircraft carried | 1 ×Westland Wasp |
| Aviation facilities | Singlehangar andhelipad |
TheMarcílio Dias-class destroyer is a class ofdestroyers of theBrazilian Navy. Two ships of theGearing class were lent by theUnited States Navy and were in commission from 1973 until 1997.[1][unreliable source?]
Marcílio Dias was commissioned asUSS Henry W. Tucker on 12 March 1945 andEspírito Santo was commissioned asUSS Brinkley Bass on 1 October 1945.[2][3]
The propulsion system and auxiliary equipment consisted of three GE turbines, high pressure cruise and low pressure with reverse gear; 60,000HP of total power, Falk double reduction gears, which drove two laminated steel propellers, four blades, 4.86 m in diameter; maximum speed 33 knots; maximum speed maintained 30knots; economic speed 10 knots; 1,746 miles of range at maximum maintained speed; 6,267 miles at economy speed; twoelectro-hydraulic vertical rudders; driven by Waterbury pumps and by a 3SHP electric motor, 440volts, three-phase, 60 cycles, governed from the bridge via a tiller, from the helm machine via a wheel and from the helm machine, directly actuating the piston control rod the Waterbury pump.[4][5][6]
FourBabcock & Wilcox delta type express boilers with economizer and integral interbeam superheater, with superheat degree control up to 850°F; two GE turbogenerators, 500kW, 440 volts, 60 cycles, three-phase and 50 kW, direct current 117 volts; two diesel emergency generators GM, 100 Kw, 440 volts, 60 cycles, three-phase; a high-pressure, 3,000 psi, vertical turbocharger; two Consolidate Steel Corp. distillation groups, 12,000 gallons/day and 4,000 gallons/day; 718 t of fuel oil capacity; 7,025 gallons, 6,048 liters of lubricating oil capacity.[4][6]
In addition to several conventional communications equipment (transmitters,transceivers andreceivers), they had:AN/SPS-10D surface-search radar;AN/SPS-40 air-search radar and Mark 25 fire-direction radar. AN/SQS-23F sonar; AN UQC underwater phone equipment; active and passive electronic warfare equipment AN/ULQ-6, CNE WLRI and MAGE.[4][5][6]
For navigation, they had: radio direction finding device JLD-1000 Direction Finder; Sperry MKll gyro needle, model c; Lionel-13495 MKl magnetic needle; Lionel 3344MK magnetic needle (government); ET/SON-3v-Coester SA echo sounder; equipment for Omega navigation, in addition to nautical instruments necessary for astronomical and coastal navigation.[4][6]
On 18 April 1975, with theMarcílio Dias was anchored inGuanabara Bay, aWestland Wasp helicopter landed on board a destroyer for the first time.[4][5]
| Marcílio Dias class | |||||||
|---|---|---|---|---|---|---|---|
| Hull no. | Name | Builder | Laid down | Launched | Acquired | Decommissioned | Fate |
| D25 | Marcílio Dias | Consolidated Steel Corporation | 29 May 1944 | 8 November 1944 | 3 December 1973[5] | 31 August 1994[4] | Sunk as target, 1994 |
| D26 | Mariz e Barros | 20 December 1944 | 26 May 1945 | 3 December 1973[7] | 1 September 1997[7] | Sunk as target, 2000 | |
