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Grundhai Midget Sub

 


 
"Grundhai" (Eng: ?), a project for a deep sea rescue craft designed to dive to 1000 meters. It was to have tracks to be able to crawl on the sea bed.

1 were built.

 

Description: Deep sea rescue U-boat
First launched: 1944
Complement, Off / Men 1 (or 1 pilot 1 engineer?)
Displacement surf: 1,5 t
Displacement subm: ?
Length: 3,6 m
Beam, max: 2,0 m
Depth: 0,8 m
Max speed surfaced: ?
Max speed submerged: 3,0 m
Radius surfaced: ?
Radius submerged: 20 sm (Radius of action)
Max diving depth: 1000 m
Diving time, stationary: ?
Diving time, alarm moving: ?
Oil fuel carried: ?
Torpedo tubes, bow / stern: x
Nr of torpedoes / mines: x
Guns fitted: x
   

Off = Officers, surf = surfaced, subm = submerged,
max = maximum, Nr = number, t = tons, m = metres, mm = millimetres,
kt = knots, sm = sea miles, sec = seconds, AA = Anti Aircraft, rds = rounds
+ = more than, - = less than, x = No/none, ? = unknown
Please note that some figures are to be considered approximate.
Main sourse for The Boats Section is the excellent book "U-boats
under the Swastika" by J.P. Mallman Showell, ISBN: 0 7110 0379 3.

 

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