Doshásta-class aircraft carrier

Class overview
Name:	Doshásta-class
Operators:	Royal Ossorian Navy
Preceded by:	Misniúil-class Suáilce-class
Succeeded by:	Bríomhar-class
In commission:	1940 - 1960
Planned:	6
Completed:	6
Retired:	6
General characteristics
Type:	Aircraft carrier
Displacement:	32,700 t standard
Length:	234 meters
Beam:	30 meters
Draught:	9 meters
Propulsion:	8 x three-tube boilers 4 x geared turbines 4 x screws
Speed:	32 kts
Range:	10,000 nm at 16 kts
Complement:	2,300
Sensors and processing systems:	Type 10-CR early-warning radar Type 11-CA fire-control radar
Armament:	16 × 120 mm/45 caliber dual-purpose guns (8×2) 48 × 40 mm/55 caliber anti-aircraft guns (12×4) 40 × 20 mm/70 caliber anti-aircraft guns
Armor:	Belt: 110 mm Deck: 90 mm Hangar: 50 mm Bulkhead: 50 mm
Aircraft carried:	78

The Doshásta-class was a class of six aircraft carriers built for Royal Ossorian Navy starting in 1928. The class comprised of the ships Doshásta, Tiomanta, Scanrúil, Treallúsach, Díograiseach, and Díocasach.

Design

General characteristics

The Doshásta-class ships had an overall length of 234 m, a beam of 30 m, and a draught of 9 m. She displaced 32,700 t at standard load. Each of the ship's four sets of geared steam turbines drove one 3-bladed propeller and were powered by 8 three-tube boilers and were rated at 148,000 shaft horsepower. This gave the Doshásta-class a speed of approximately 32 knots. She had a range of approximately 10,000 nautical miles at 16 knots.

Flight deck and hangar

The Doshásta-class ships had a flight deck which was 234 m long. The class was fitted with a two-story enclosed hangar and was outfitted with arrestor gear and a compressed steam catapult. The flight deck and hangar were both armored. Two elevators allowed aircraft to be transferred between the two hangar decks and the flight deck, and were placed at either end of the hangars, outside of the armored box with access through sliding armored doors in the fore and aft bulkheads. The ships' aircraft capacity was 72 aircraft divided into six squadrons plus an additional six aircraft. The ships' crew totaled 2,300 officers and ratings.

Armament

Like its predecessors in the Misniúil-class, the Doshásta-class was outfitted with an extremely heavy anti-aircraft battery to compliment its passive armor defenses. To this end, the Doshásta-class ships were fitted with 16 120 mm dual-purpose guns arrayed in twin mounts around the perimeter of the flight deck, with each gun being provided with 150 rounds. The ships were further armed with an anti-aircraft battery of 48 40 mm anti-aircraft guns in quadruple mounts and 40 20 mm anti-aircraft guns in single mounts also positioned around the perimeter of the flight deck.

Ships

Ship	Translation	Hull number	Builder	Laid down	Launched	Commissioned	Fate
Doshásta	"Insatiable"	IAF 37	HRM Dockyard, Cléire	1937	1938	1940
Tiomanta	"Dedicated"	IAF 38	HRM Dockyard, Cléire	1937	1938	1940
Scanrúil	"Formidable"	IAF 39	HRM Dockyard, Cléire	1937	1938	1940
Treallúsach	"Enterprising"	IAF 40	HRM Dockyard, Cléire	1938	1939	1941
Díograiseach	"Fervent"	IAF 41	HRM Dockyard, Cléire	1938	1939	1941
Díocasach	"Avid"	IAF 42	HRM Dockyard, Cléire	1938	1939	1941