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fighting ships of the world

REGIA MARINA (ITALY)

CRUISERS

SAN GIORGIO armoured cruisers (1910-1911)

San Marco 1911

San Giorgio 1940

San Giorgio 1940

Name No Builder Laid down Launched Comp Fate
San Giorgio   R. Cantiere di Castellamare di Stabia 4/7/1905 27/7/1908 1/7/1910 scuttled 22/1/1941
San Marco   R. Cantiere di Castellamare di Stabia 2/1/1907 20/12/1908 7/2/1911 target 1931

 

Displacement normal, t

San Giorgio: 10167

San Marco: 10969

Displacement full, t

San Giorgio: 11300

San Marco: 11900

Length, m

131.0 pp 140.8 oa

Breadth, m

21.0

Draught, m

San Giorgio: 7.30

San Marco: 7.80

No of shafts

San Giorgio: 2

San Marco: 4

Machinery

San Giorgio: VTE, 14 Blechynden boilers

San Marco: Parsons steam turbines, 14 Babcock & Wilcox boilers

Power, h. p.

San Giorgio: 19500

San Marco: 23000

Max speed, kts

San Giorgio: 23.2

San Marco: 23.8

Fuel, t

coal 1560 + oil

Endurance, nm(kts)

San Giorgio: 6270(10)

San Marco: 4800(10)

Armour, mm

belt: 200, main gun turrets: 200, secondary gun turrets: 160, deck: 50, CT: 250

Armament

2 x 2 - 254/45 A1907, 4 x 2 - 190/45 A1908, 18 x 1 - 76/50 V1908, 2 x 1 - 47/50 V1908, 2 x 1 - 6.5/80, 3 - 450 TT sub (1 fwd, 2 beam)

Complement

698 - 705

Ship project history: Largest and strongest armoured cruisers of Italian Navy. They were ordered at once after Amalfi class and had similar armament of predecessors, but had advanced protection, improved seaworthiness and habitability. San Marco differed by machinery: she became the first Italian ship equipped with steam turbines. To the mid-1930s San Giorgio was used as TS. In 1937-1938 she has conversion to coast defence ship at Spezia. In the early 1940 she was converted to AA floating battery and passed to Tobruk.

Ship protection: Main 200mm belt (full ship length, tapering to 80mm at lower edge), medium belt between stem and aft main gun turret and upper belt between 190mm gun turrets expanded to upper deck, main and upper belts were closed by 150mm bulkheads abreast barbettes. Main belt thickness was 100mm on short parts at ship ends. Main deck was connected with lower edge of main belt by slopes.

Modernizations: 1917 - 1918, both: - 8 x 1 - 76/50, 2 x 1 - 47/50; + 6 x 1 - 76/40 A1917

(1937 - 6/1938, Arsenale di La Spezia), San Giorgio: Boilers were reduced to 8 and converted to oil only (18200hp, 18.6kts, 1300t of oil), two funnels were removed; - 10 x 1 - 76/50, 6 x 1 - 76/40, 2 x 1 - 6.5/80, 3 - 450 TT; + 4 x 2 - 100/47 OTO 1928, 2 x 2 - 13.2/76; displacement was 9470 / 11500t.

early 1940, San Giorgio: + 1 x 2 - 100/47 OTO 1928, 6 x 2 - 20/65 Breda 1935, 5 x 2 - 13.2/76

Naval service: San Giorgio was hard damaged at Tobruk 22/1/1941 by British deck aircraft (Eagle air group) and scuttled by crew at shallow water.

San Marco in 1931-1935 was converted to radio-controlled target ship for gunnery training (8600/8966t, 13000hp, 18kts), in September, 1943 she was captured by German troops and scuttled by them at Spezia in 1944.

San Marco 1910

San Giorgio 1940

 

 

Ivan Gogin, 2009-14