SHIP COMPRISING ONE OR MORE DERRICKS SUCH AS A DREDGE WITH A SUCTION PIPE DERRICKS

The invention relates to a ship (1) with one or more derricks (4), in particular a dredge having at least one derrick (4) for handling the suction pipe (22) which derrick (4) can be moved between an inboard position (7) and a vertical position said derrick having guiding tracks (8,9) for a crane jib (17) which tracks (8,9) in the vertical position of the derrick (4) are in line with guiding track (15,16) inside the side wall (3) of the ship the cable for controlling the jib (17) being protected by a channel inside the ship side wall (3) said guiding tracks(8,9,15,16) having upper and lower stop means (29,28) for controlling the movements of the crane jib (17) which jib (17) is pivotable about a horizontal axis (18) between a position perpendicular to the derrick (4) and a downwardly directed position.