NAVYPEDIA

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
PN21 (ex-PM...) PN22 (ex-PM...)	Danubius, Budapest: PN21, 22	1950: PN21 1951: PN22	PN21 (1951)	none	1973: PN22

Technical data

Displacement standard, t	PN21: 52 PN22: 74
Displacement full, t
Length, m	PN21: 28.0 PN22: 33.2
Breadth, m	3.90
Draught, m	PN21: 0.60 PN22: 1.10
No of shafts	2
Machinery	2 Lang MP35 diesels
Power, h. p.	420
Max speed, kts	13.5
Fuel, t	diesel oil
Endurance, nm(kts)
Armour, mm	belt, deck, CT: up to 30
Armament	1 x 1 - 37/73 70K, 1 x 1 - 82/11 mortar
Complement	16

Standard scale images

Project history

Former PM1 class MGBs, radically converted during fitting out. They had 30mm casemate armour added and both were excessively top heavy. After sinking of the PN21 her sister-boat was lengthened.

Ship protection

30mm armour protected the side, deck and casemate.

Modernizations

None.

Naval service

PN21 capsized during manoeuvres in 1951.