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DELFIM submarines (1935)


Photo



Delfim 1934

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Delfim D   Vickers-Armstrong, Barrow, UK 3.1933 1.5.1934 1935 stricken 1950
Espadarte E   Vickers-Armstrong, Barrow, UK 3.1933 30.5.1934 1935 stricken 1950
Golfinho G   Vickers-Armstrong, Barrow, UK 3.1933 30.5.1934 1935 stricken 1950


Technical data


Displacement standard, t 
Displacement normal, t800/1092
Length, m

69.2

Breadth, m

6.50

Draught, m

3.86

No of shafts

2

Machinery

2 Vickers diesels / 2 electric motors

Power, h. p.

2300 / 1000

Max speed, kts

16.5 / 9.2

Fuel, t

diesel oil

Endurance, nm(kts)5000(10) / 110(4)
Armament

1 x 1 - 102/40 Vickers-Armstrong Mk M, 2 x 1 - 12.7/62, 6 - 533 TT (4 bow, 2 stern, 12)

Electronic equipmentpresumably type 120 sonar
Complement

38

Diving depth operational, m 


Standard scale images


<i>Delfim </i>1937
Delfim 1937


Graphics


<i>Delfim </i>1934
Delfim 1934


Project history

In 1930 Portuguese government ordered to CRDA (Monfalcone) four submarines: two large (1045/1305t, 17/8kts, 8 533mm TTs, 2 100mm/47 guns) and two medium (780/1000t, 14/8kts, 6 533mm TTs, 1 100mm/47 gun). Their building was started in 1931 (large submarines were named Delfim and Espadarte), however soon Portuguese government for financial reasons has broken the contract. All 4 boats were subsequently completed for Regia Marina as Glauco and Otaria (large), Argo and Velella (medium).

In exchange in 1931 the order for three medium submarines has been given out to British concern Vickers-Armstrong, building was conducted in Barrow. Portuguese boats were saddle-tank-hulled and were structurally similar to typical British submarines of inter-war period, differing by narrower hull. 102mm/40 gun was on a superstructure transferring to CT and was completely covered by a streamlined shield. All TTs had spare torpedoes.

Modernizations

None.

Naval service

No significant events.