JOHANNES II

Principal characteristics:

Name

Johannes II

Type

Demountable wheel dredger with direct driven submerged dredgepump

Year of construction

1995

Owner

Roelofs-Den Ham

Builder

IHC Holland

Dimension

Length overall

58.1m

Length over pontoon

34.0m

Width

6.0m

Depth

1.47m

Maximum dredging depth (at 40°)

30.0m

Diameter suction pipe

350mm

Diameter discharge pipe

350mm

Wheel diameter

1.8m

Power and Speed

Total installed power

616kW

Wheel power

30kW

Submerged dredgepump

type

IHC 740-225-300

power at shaft

250kW

drive

direct by diesel engine through reduction gearbox

Booster pump

type

IHC 740-225-300

power at shaft

300kW

drive

direct by diesel engine through reduction gearbox

Engines:

Caterpillar 3408 DI-TA of 300kW at 1800 rpm for drive of submerged dredgepump and hydraulics for wheel, ladder winch, 2 side winches and 3 Christmastree winches. Caterpillar 3408 B DI-TA of 300kW at 1800rpm for drive of boosterpump. Listen-Petter of 16kW at 1500rpm for generator. 500kW IHC Beaver Wheel Dredger With Electric Shore Supply.