OS2U-1 Kingfisher

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

OS2U-1 Kingfisher in the garage.

The OS2U-1 Kingfisher is a Rank I American hydroplane with a battle rating of 1.0. It was in the game since the start of the Open Beta Test prior to Update 1.29 The OS2U-1 is the predecessor of the more advanced OS2U-3 Kingfisher.

The main purpose, usage and tactics recommendations

General play style

Kingfisher is classified as a bomber and as such it spawns at altitude. Primarily, it should be used in ground attack role across all game modes. If possible, stay out of sight of the enemy and try to take indirect routes to desired targets. Single 7.62 mm gun is capable of destroying artillery, AAA (stationary and on trucks) and armored cars. Tanks and light pillboxes cannot be destroyed with such a small MG caliber but only with bombs. Cargo ships will require a single 100 lb hit on deck. Landing crafts may be taken out by gunfire but will require lots of hits.

Vehicle characteristics

Tactics

Specific enemies worth noting

Any fighter that has ammo can and will down the OS2U-1 with little effort.

Counter-tactics

Pros and cons

Pros:

  • Can land on water.
  • It can also land on land, with damage to the floats, but nothing major.
  • Is a useful plane in Domination, where it can land on the capture point quickly to secure the points for your team-though beware you may lose to much speed in order for you to takeoff again this plane cannot gain speed while on land .

Cons:

  • Terrible speed compared to other float planes.
  • Extremely fragile.
  • Weak offensive armament consisting of 1 X 7.62 mm machine gun, and is barely adequate to destroy lightly armored vehicles.
  • Weak defensive armament, 1 X 7.62 mm machine gun cannot extensively damage planes of its tier with a burst, and also has bad coverage.
  • 2 X 100 lb bombs is a weak payload, only sufficient to take out lightly armored equipment and vehicles.
  • Armor is nonexistent.
  • Crew is sufficiently lacking in protection. especially for the pilot.
  • Tail-gunner is easily to knock-out.
  • Poor acceleration.
  • Loses energy rapidly in turns.
  • Bombs can be difficult to aim due to a lack of bomb sight.

Specifications

Armaments

Offensive armament

  • 1 × 7.62 mm Browning machine gun, nose-mounted (500 rpg)

Defensive armament

Firing arc of the defensive armament.

Payloads

  • 2 × 100 lbs AN-M30A1 bombs

bombs

bombs

Bombs

Nation Mass (nominal) Name Caliber Drag   Damage  
  Rating  
  Radius     Pen     Damage  
  Rating  
  Radius     Pen  
Bomb properties High explosive Fragmentation
Nation-de.png
Germany
1,000 kg SC 1000L2 450 33 360.4 30m 250mm 94.4 150m 15mm
250 kg SC 250Ja 285 16.9 6.3 10m 100mm 111 80m 12mm
50 kg SC 50Ja 152 4.3 0 3m 35mm 51.3 40m 10mm
500 kg SC 500K 392 23.7 100 25m 160mm 100 120m 15mm
10 kg SD 10C 152 0.8 0.3 5m 8mm 0 15m 5mm
10 kg SD 10a 152 0.8 0.5 5m 10mm 0 15m 5mm
Nation-jp.png
Japan
250 kg mod.25 mk 2 285 16.9 6.3 10m 100mm 111 80m 12mm
500 kg mod. 50 mk 2 392 23.7 100 25m 160mm 100 120m 15mm
800 kg mod. 80 mk 1 450 49.6 640.9 40m 250mm 94.4 150m 15mm
250 kg Type 92 mod. 25 285 16.9 6.3 10m 100mm 111 80m 12mm
500 kg Type 92 mod. 50 392 23.7 100 25m 160mm 100 120m 15mm
100 kg Type 94 mod. 10 267 9.3 0.9 6m 75mm 102.3 45m 12mm
50 kg Army Type 94 mod. 5 152 4.3 0 3m 35mm 51.3 40m 10mm
60 kg Type 97 mod. 6 152 4.3 0 3m 35mm 51.3 40m 10mm
250 kg Type 98 mod.25 285 16.9 6.3 10m 100mm 111 80m 12mm
800kg Type 99 mod. 25 450 49.6 640.9 40m 250mm 94.4 150m 15mm
800 kg Navy Type 99 No. 80 mod. 1 450 49.6 640.9 40m 250mm 94.4 150m 15mm
Nation-su.png
USSR
100 kg FAB-100 267 9.3 0.9 6m 75mm 102.3 45m 12mm
1,000 kg FAB-1000 450 33 360.4 30m 250mm 94.4 150m 15mm
250 kg FAB-250M-43 285 16.9 6.3 10m 100mm 111 80m 12mm
50 kg FAB-50 152 4.3 0 3m 35mm 51.3 40m 10mm
500 kg FAB-500 392 23.7 100 25m 160mm 100 120m 15mm
1,500 kg FAB-1500M-46 450 33 2452.7 70m 450mm 94.4 150m 15mm
3,000 kg FAB-3000M-46 450 33 8493.2 100m 500mm 94.4 150m 15mm
Nation-gb.png
Britain
453 kg 1000 lb GP 392 37 100 25m 160mm 100 120m 15mm
453 kg 1000 lb GP mk 1 392 37 100 25m 160mm 100 120m 15mm
453 kg 1000 lb MC mk 1 392 37 100 25m 160mm 100 120m 15mm
113.4 kg 250 lb 267 0 5.4 13m 78mm 100.6 48m 12mm
113.4 kg 250 lb 43 267 0 5.4 13m 78mm 100.6 48m 12mm
113.4 kg 250 lb late 267 0 5.4 13m 78mm 100.6 48m 12mm
226.8 kg 500 lb 285 16.9 15.7 16m 100mm 111 80m 12mm
226.8 kg 500 lb 43 285 16.9 15.7 16m 100mm 111 80m 12mm
1,815 kg mk 2 Cookie 450 100 4955.1 80m 400mm 87.6 200m 15mm
Nation-us.png
USA
453.6 kg 1000lb AN-M65 cone 392 37 100 25m 160mm 100 120m 15mm
453.6 kg 1000 lb AN-M65A1 392 37 100 25m 160mm 100 120m 15mm
45.4 kg 100 lb AN-M30A1 152 4.3 1 8m 50mm 51.3 40m 10mm
907.2 kg 2000 lb AN-M66A2 450 49.6 640.9 40m 250mm 94.4 150m 15mm
113.4 kg 250 lb AN-M57 267 9.3 4.1 12m 75mm 102.3 45m 12mm
226.8 kg 500 lb AN-M64A1 285 16.9 15.7 16m 100mm 111 80m 12mm
Nation-fr.png
France
kg 100 kg No. 1 m mm m mm
kg 200 kg No. 1 m mm m mm
kg 500 kg No. 2 m mm m mm

Crew

  • Pilot
  • Gunner

Total: 2 crew members

Engine & mobility

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator


Engine

Name: Pratt & Whitney R-985-48 9-cylinder radial
  • Cooling type: Air
  • Max power: 364 hp (Stock), 446 hp (Upgraded)
  • Takeoff power: 415 hp (Stock), 496 hp (Upgraded)
  • Mass: 290 kg
Name: Pratt & Whitney R-985-48 9-cylinder radial
  • Cooling type: Air
  • Max power: 360 hp (Stock), 400 hp (Upgraded)
  • Takeoff power: 411 hp (Stock), 450 hp (Upgraded)
  • Mass: 290 kg
Name: Pratt & Whitney R-985-48 9-cylinder radial
  • Cooling type: Air
  • Max power: 360 hp (Stock), 400 hp (Upgraded)
  • Takeoff power: 411 hp (Stock), 450 hp (Upgraded)
  • Mass: 290 kg

Stats

Stock
  • Max speed: 282 km/h
    • at height: 1,700 m
  • Max altitude: 5,950 m
  • Turn Time: 35.6 s
  • Rate of Climb: 4.5 m/s
  • Takeoff run: 305 m

Upgraded

  • Max speed: 310 km/h
    • at height: 1,700 m
  • Max altitude: 5,950 m
  • Turn Time: 31.1 s
  • Rate of Climb: 9.9 m/s
  • Takeoff run: 305 m
Stock
  • Max speed: 271 km/h
    • at height: 1,700 m
  • Max altitude: 5,950 m
  • Turn Time: 39.0 s
  • Rate of Climb: 5.1 m/s
  • Takeoff run: 305 m

Upgraded

  • Max speed: 296 km/h
    • at height: 1,700 m
  • Max altitude: 5,950 m
  • Turn Time: 33.1 s
  • Rate of Climb: 6.8 m/s
  • Takeoff run: 305 m
Stock
  • Max speed: 271 km/h
    • at height: 1,700 m
  • Max altitude: 5,950 m
  • Turn Time: 39.0 s
  • Rate of Climb: 5.1 m/s
  • Takeoff run: 305 m

Upgraded

  • Max speed: 296 km/h
    • at height: 1,700 m
  • Max altitude: 5,950 m
  • Turn Time: 33.1 s
  • Rate of Climb: 6.8 m/s
  • Takeoff run: 305 m

Performance

Warning this is still in the test phase and is probably incorrect. Take information with a grain of salt (data taken from 1.55)



0
1
2
3
4
5
6
7
8
9
10
0
0.1
0.2
0.3
0.4
0.5
Horsepower in 1000hp
Altitude in 1000m

Supercharger Stage #1: 100%

Supercharger Stage #1: WEP



Modules and improvements

History of creation and combat usage

OS2U Kingfisher built by Vought-Sikorsky Aircraft Division was catapult-launched observation floatplane designed by Rex Beisel (a design engineer responsible for F4U Corsair). Kingfisher was assembled using a revolutionary spot welding construction which created a smooth fuselage that generated less drag. It also had number of innovative features, such as deflector plate flaps and drooping ailerons used to create additional lift at low speeds which improved control of the plane.[1]

First prototype XOS2U-1 flew in 1938 and first production variant was delivered in early 1940.[2] Despite its modest performance it gradually started replacing Curtiss SOC Seagull biplane and ended up as U.S. Navy's main ship-launched scout plane during WW2. It stayed in use much longer than expected because its successor Curtiss SO3C Seamew suffered from various issues, most notably engine failures.

OS2U-3 first flew on 17 May 1941. It was very similar to OS2U-1. Main difference from its predecessor was additional self-sealing fuel tanks in the wings and improved armor protection for the pilot. It had a 450 hp (336 kW) Pratt & Whitney R-985-AN2 engine (all Kingfishers were powered by different versions of this engine).[3] It was armed with a 7.62 mm gun in the nose (hidden inside engine compartment) and a 7.62 mm gun in dorsal turret on flexible ring mount. Also, apart from 100 lb (45 kg) bombs it was able to load 325 lb (147 kg) of depth charges. The OS2U-3 was the most produced variant with just over 1000 units built. It was the only exported variant and it served in many countries from Uruguay to Australia including the Soviet Union aboard cruiser Murmansk (USS Milwaukee). Last of the Kingfishers were withdrawn from service on Cuba in 1959.

Kingfisher landing near USS Massachusetts in 1944.

While some were deployed to land bases (OS2U-2 installed with wheels instead floats were mostly used for training) most of Kingfishers operated from U.S. Navy's heavy and light cruisers and battleships. Violent launch was done into the wind by catapult powered with a cannon shell. Landing required ship to make a turn in order to create patch of relatively calm sea surface where Kingfisher could land and then taxi to the “sled” used to pull it closer to the ship's crane which would hoist it back on deck.

In the early 1940s seaborne radar was a rarity and still primitive, the eyes and ears of a fleet of warships were limited at best. This is where the observation aircraft was imperative. A battleship would launch a Kingfisher seaplane and the aircraft could then patrol the surrounding seas for hundreds of miles for hours at a time. Depending on the threat, the Kingfisher might be looking for anything as huge as an enemy fleet or as small and deadly as a single enemy submarine. In the case of the latter, the Kingfisher had teeth of its own: even with its limited payload, Kingfishers assisted in the sinking of U-Boats U-576 and U-176. Simply finding a target or enemy fleet was of immense use to the bridge crew of a warship, but the Kingfisher could do more. Once an enemy fleet was identified it was almost inevitable that an engagement would take place – even in the 1940s, naval guns were well capable of firing shells in excess of 20 miles. The Kingfisher could fly over an enemy fleet and report directly back to the bridge crew of any warship within its own fleet, giving real time feedback of the accuracy of shot and corrections to bring the tremendous firepower onto a target. Furthermore, the importance of naval gunfire did not stop with engaging other vessels: carrying some of the largest guns in the entire world on a mobile platform, battleships were the ultimate fire support during an amphibious assault. As US Marines fought their way from beachheads all across the Pacific theatre, the guns of the fleet were often there to eliminate concentrations of enemy troops and heavy defensive positions. Again, the Kingfisher was ideally placed to ensure this supporting fire was accurately and efficiently delivered.[4]

Even though it was used in many different roles, as trainer, bomber, anti-submarine platform in the Atlantic, scout, naval gunfire spotter etc. the Kingfisher was most respectable for Search and Rescue missions where it was involved in saving downed airmen in the Pacific. On one occasion in 1942 over Pacific a B-17D became disoriented, ran out of fuel and ditched. After drifting for several weeks without food and water crew and passengers were rescued by a Kingfisher. With all the survivors on its wings it could not take off and started taxing to nearest island before being relived by a torpedo boat. However, most notable rescue happened in 1944 over Guam when a Kingfisher of USS Indiana rescued two downed airmen despite being exposed to fire from several nearby Japanese artillery positions.[2] The only confirmed kill scored with Kingfisher happened on 16 February 1945 at Iwo Jima where Lieutenant D.W. Gandy shot down a Zero fighter.

Ingame description

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Screenshots and fan art

Skins and camouflages for the OS2U series from live.warthunder.com.

Additional information (links)

References

  1. Noles, J. L. Jr (2005, February/March). Old Slow and Ugly. Air & Space, p. 67.
  2. 2.0 2.1 Vought OS2U-3 Kingfisher. (2015, May 05) Retrieved from [1]
  3. Noles, J. L. Jr (2005, February/March). Old Slow and Ugly. Air & Space, p. 68
  4. Barber, M. (2015, April 17). Ugly Ducklings – The Vought OS2U Kingfisher. Retrieved from [2]
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os2u_1.png

Icon-country-usa.png OS2U-1 Kingfisher
Nation USA
Type Light bomber
Fighting style Energy Fighting
Turn Fighting

   Metric✓       Imperial   

   Metric       Imperial✓   

Offensive armament
1 x 7.62 mm Browning Machine gun
Magazine 500 rpg
Mount Nose
Defensive armament
1 x 7.62 mm Browning Machine gun
Magazine 600 rpg
Mount Rear
Payload Option 1
Without load Clean Plane
Payload Option 2
2 x 100 lb AN-M30A1 💣 Bomb
Characteristics
Empty Weight ~1937 kg
Empty Weight + fuel ~2319 kg
Takeoff Weight ~2540 kg
Wing Area ~26 m²
# Flap Positions 3
Number of Engines 1
Air Breaks no
Arrestor Gear no
Statistics
Power per Engine 400 hp
WEP Duration infinite
top speed ~295.92 kph at 1700 m
Climb Rate ~6.76 m/s
Optimal climb velocity ~170.23 kph
Turn Time ~16.79 s
Wing loading (Empty) ~75.00 kg/m²
Characteristics
Empty Weight ~4270 lb
Empty Weight + fuel ~5112 lb
Takeoff Weight ~5600 lb
Wing Area ~277 ft²
# Flap Positions 3
Number of Engines 1
Air Breaks no
Arrestor Gear no
Statistics
Power per Engine 400 hp
WEP Duration infinite
Top speed ~183.88 mph at 5577 m
Climb Rate 22.18 ft/s
Optimal climb velocity ~105.78 mph
Turn Time 16.79 s
Wing loading (Empty) ~15.36 lb/ft²
Limits
Max Speed limit 405 kph
Gear lmit 350 kph
Combat Flaps 360 kph
Max static +G's ~18
Max static -G's ~18
Optimal Velocities
Ailerons <200 kph
Rudder <200 kph
Elevators <240 kph
Radiator >250 kph
Limits
Max Speed limit 252 mph
Gear lmit 217 mph
Combat Flaps 224 mph
Max static +G's ~18
Max static -G's ~18
Optimal Velocities
Ailerons <124 mph
Rudder <124 mph
Elevators <149 mph
Radiator >155 mph
Manual Control
Mixer is not controllable
Pitch is controllable
has automatic pitch
Radiator (water) is controllable
Radiator (oil) is not controllable
Oil and water uses combined radiator control
Supercharger is not controllable
Turbocharger is not controllable
Compressor settings 1
Optimal Altitude
1376 m
4516 ft
100% Enginepower 400 hp
WEP Enginepower 450 hp
* Warning this is still in the test phase and can be incorrect. Take information with a grain of salt (data from 1.57 initial release)