Name: Norma
Type: Water injection dredger / underwater plough
Owner: Royal Boskalis Westminster
Built by: Van Boelen
Year: 1981
Total installed power: kW
Length o.a.: 27,0 m
Length b.p.: 18,8 m
Breadth: 9,5 m
Draught: 2,2 m
Speed: kn
Dredging depth: 17,0 m