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Castelfidardo 1866    

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Regina Maria Pia			F C de la Méditerranée, La Seyne, France	22.7.1862	28.4.1863	17.4.1864	stricken 5.1904
San Martino			F C de la Méditerranée, La Seyne, France	22.7.1962	21.9.1863	9.11.1864	stricken 8.1903
Castelfidardo			Gouin et Guibert, Saint-Nazaire, France	27.7.1862	1.8.1863	5/1864	stricken 12.1910
Ancona			C A de l'Océan, Bordeaux, France	11.8.1862	17.10.1864	4/1866	stricken 8.1903

Technical data

Displacement normal, t	Regina Maria Pia, San Martino: 4201 Castelfidardo: 4192 Ancona: 4157
Displacement full, t	Regina Maria Pia, San Martino, Castelfidardo: 4527 Ancona: 4619
Length, m	Regina Maria Pia, San Martino: 75.5 pp 81.2 oa Castelfidardo, Ancona: 76.0 pp 81.8 oa
Breadth, m	15.2
Draught, m	6.35
No of shafts	1
Machinery	Regina Maria Pia, San Martino: 1 HSE, 6 rectangular boilers Castelfidardo, Ancona: 1 HSE, 8 rectangular boilers
Power, h. p.	Regina Maria Pia: 2924 San Martino: 2620 Castelfidardo: 2125 Ancona: 2548
Max speed, kts	Regina Maria Pia: 13.0 San Martino: 12.6 Castelfidardo: 12.1 Ancona: 13.7
Fuel, t	coal 485
Endurance, nm(kts)	2600(10)
Armour, mm	Regina Maria Pia, San Martino: iron; belt: 120, battery: 110 Castelfidardo, Ancona: iron; belt: 110, battery: 110
Armament	Regina Maria Pia, San Martino: 4 x 1 - 203/13 Armstrong 7ton MLR, 22 x 1 - 164/17 Palliser 5.12ton MLR or 164/16 Palliser 3.54ton MLR Castelfidardo, Ancona: 4 x 1 - 203/13 Armstrong 7ton MLR, 23 x 1 - 164/17 Palliser 5.12ton MLR or 164/16 Palliser 3.54ton MLR
Complement	484

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Project history

Ordered by the Italian Government from French yards (who also drew up the designs), these ships varied slightly, one group consisting of Regina Maria Pia and San Martino, and the other of Castelfidardo and Ancona. All were iron-hulled with complete iron belts and sides. After 1866, the armament and armour system were modified so that the ships, provided with a central armoured casemate, could fire ahead and astern (two guns forward, one astern). The armour for the end guns was removed. They were rigged at first as three-masted schooners, but during their long life, the rig was altered, first to barque and finally, about 1888-90, to two military masts with fighting tops.

Ship protection

Their sides were entirely protected by 110-120mm thick iron plates, battery had 110mm protection.

Modernizations

1871, Castelfidardo, Ancona: were armed with 2 x 1 - 254/14 Armstrong 8.1ton MLR No2, 8 x 1 - 203/13 Armstrong 7ton MLR

1875, Regina Maria Pia, San Martino; 1880, Castelfidardo, Ancona: were armed with 2 x 1 - 229/14 Armstrong 12.6ton MLR, 9 x 1 - 203/13 Armstrong 7ton MLR

1884, Castelfidardo: was armed with 8 x 1 - 152/33 A1883, 6 x 1 - 120/24 Armstrong 1.38ton BLR, 4 x 1 - 57/40 H, 8 x 5 - 37/20 H

1884, Ancona: was armed with 8 x 1 - 152/33 A1883, 6 x 1 - 120/24 Armstrong 1.38ton BLR, 4 x 1 - 57/40 H, 2 x 5 - 37/20 H, 3 - 350 TT (1 bow, 2 beam)

1885, Regina Maria Pia, San Martino: were armed with 8 x 1 - 152/33 A1883, 5 x 1 - 120/24 Armstrong 1.38ton BLR, 4 x 1 - 57/40 H, 8 x 5 - 37/20 H, 3 - 350 TT (1 bow, 2 beam)

1900, Castelfidardo: was armed with 1 x 1 - 76/40 A, 1 x 1 - 75/21 Uchatius 29cwt BL No1, 4 x 1 - 57/43 N, 1 x 1 - 47/40 (c.o.), 2 x 5 - 37/20 H, 2 - 450 TT (beam)

Naval service

Castelfidardo in 1900 was converted to a torpedo TS.