In Service: 1941 to 14 June 1944
                    
                    
                    
                    Ordered:
                    Builder: Abeking 
                    & Rasmussen, Lemwerder
                    
Construction No: 3412
                    
Laid down: 
                    Launched: 21 May 1941
                    
Commissioned: 1941
                    
                    
                    
                    Type: 1936-42 Type R-boat/Räumboot
                    
Class: R21 Class
                    
                    
Displacement: tons standard 135 tons full load
                    
Length: 37.8 m
                    
Beam: 5.82 m
                    
Draft: 1.51 m
                    
Propulsion: 2 × MWM 6 × cylinder 4 stroke 
                    diesel engines producing up to 1,800 ehp
                    
Propellers: 2 × Voith-Schneider
                    
Speed: 20 knots
                    
Range: 900 nautical miles at 15 knots
                    
Crew: 38 men and officers
                    
Armament:
                    6 × 2 cm MG L/65 C/30
                    carried 6000 rounds
                    
Armour
                    Aircraft:
                    Electronics: 
                    Operators: Kriegsmarine
                    
Variants: 
                    Other: R-boats 
                    Articles: 
                    
                    
                    
                    The R73 R-boat (Räumboot) was built in the 1940s by 
Abeking 
                    & Rasmussen shipyard located in Lemwerder, Germany as a minesweeper or escort vessel for the Kriegsmarine. 
                    
                    And which served in the 
1. 
                    Räumbootsflottille during World War II. 
                    
                    
                    
                    1941
                    The R-boat R73 is commissioned.
                    
                    
1941
                    The R-boat R73 becomes operational with the 
1. 
                    Räumbootsflottille.
                    
                    
14 June 1944
                    The R-boat R73 is sunk after hitting a German mine at 2321 
                    hrs in the Gulf of Finland. 
                    Position 57° 36' 5N 27° 13' 2E, 1 crew lost.
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    German Warships, 1815-1945: Major Surface Vessels.
                    ISBN-10: 0851775330
                    
                    German Warships, 1815-1945: U-boats and Mine Warfare Vessels.
                    ISBN-10: 155750301X
                    
                    German warships of the Second World War.
                    ISBN-10: 0668040378
                    
                    For a complete list of 
sources