Technical Details of Vesikko

Dimensions: 40,9 x 4,1 x 4,2 metres 

Displacement: 250 / 300 tons 

Crew: 20 men Maximum depth: 100 metres 

Crash dive: 45 seconds to 9,3 meters 

Maximum speed: 13/8 knots (24km/h surface & 15km/h submerged) 

Range

• 1 500 nautical miles / 10 knots, 150 hours (surface)
• 50 nautical miles / 4 knots, 13 hours (submerged) 

Armament

• 3 pcs – 53 cm Whitehead T/33 torpedoes 
• 1 pcs – 20 mm Madsen AA gun 
• 1 pcs – 7,62 mm AA- machine gun 

Machinery

• 2 – MWM diesel engines, 350 HP / 257 kW each 
• 2 – Siemens electric motors, 180 HP / 132 kW each