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| Reference Number | 5632
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| Vessel Type | Miscellaneous Vessels
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| Designed By | IHC, Holland
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| Built By | Whangarei Engineering Co, Whangarei, New Zealand
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| Year Built | 1979
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| LOA | 55.15 m
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| Beam | 12 m
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| Draft | 4.1 m
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| Construction | Steel
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| Construction Details | 10mm steel plate
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| General Description | TRAILING SUCTION HOPPER DREDGE
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| Engine Details | 2 x Mirrlees Blackstone, 350 kW each
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| Horsepower | 700 kW
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| Auxiliary Engine | 2 x Mirlees Blackstone 78/E driving 160kVA alternators
Cummins 9SL9 285hp drives jet water pump
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| Electrical | Shore power 65 amps, 3 phase
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| Gearbox | 2 x Blackstone NE/255 2.5:1 reduction boxes
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| Propeller | twin screw - fixed prop
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| Steering | Twin rudders
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| Thruster | Bow Thruster 200 kW electric/hydraulic VP
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| Fuel Capacity | 60,000 litres
Currently holding approximately 36,000 litres diesel
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| Water Capacity | Fresh water - 17,000 litres
Black water - 3,000 litres
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| Max Speed | 9.5 knots
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| Service Speed | 7.5 knots
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| Fuel Consumption | Fuel Consumption
(dredging/steaming -
24 hrs)
2,500 L
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| Engine Room | CO2 flooding system
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| Accommodation | 6
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| Gear | Trailer Suction Details
The deployed draghead is positioned amidships on the
starboard side and this configuration allows dredging to within
+/- 28 m of an obstruction, such as a 90-degree berth pocket
wall.
The vessel is equipped with Hydropro dredge software. A
contracted surveyor retained by BDC is used to configure survey
data and infrastructure models supplied by the client.
Positioning is obtained via a V500 GPS antenna and where
available, corrections and RTK positioning from a local
correction station is used. This ensures precise horizontal
positioning. If required, our surveyor can provide a base station.
Tide corrections are generally obtained via internet from the
client or if required, our surveyor can provide a base station and
internet connection.
Draghead depth is determined using water pressure at the
draghead, converted to digital depth.
Fore and aft drafts are determined using water pressure at
fore and aft sounding tubes converted to analogue depth and
displayed on bridge equipment.
The vessel's position and track are maintained by the Dredge
Master whilst a Pipeman manages the draghead position and
efficiency.
Minimum dredge depth is that which is required to float.
Touching the bottom in calm waters whilst dredging poses
no risk, provided there are no obstructions. This has enabled
Kawatiri to complete
Draghead width 1550 mm
Pipe Diameter 500 mm
Pipe Length 12,900 mm
Maximum Dredge Depth 11,000 mm
Impeller Diameter 1050 mm
I.H.C Origiona pump
Pump Capacity 60 m3/min
Loading Rate (shingle / sand) 20 m3/min
Jetwater Pressure 6 bar
Hopper Capacity 600 m3 - 14mm steel plate
Max Dredge Depth 10.5 m
Levelling Bar Details
The levelling bar was developed for taking high spots off sand waves
in Port Nelson's inner channel. Although not as effective it has
provided reasonable results in mud.
The bar is 12 m in length and 2.5 T in weight.
MARINE CRANE
BOB-LIFT
1) a maximum lift of 20 T at 2.5 m
2) a minimum lift of 1 T at 21.6 m
3) and 2.45 T at 14 m
The crane is fitted with a 20 T winch drum.
Trunion Slide Winch
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| Anchor | 4 point mooring system
2 anchors in situ plus spare
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| Radar | Furuno M1835, 36miles, new 2017
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| Survey Class | Built to Lloyds A1 - maintained until 2012.
Currently
Maritime NZ Certificate of Survey
Date of expiry 18/09/2027
Inshore and Restricted Coastal
NZ Inshore and Restricted Offshore to 12nm
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| SPECIAL | NEGOTIABLE
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Plus GST and /or Taxes if any. All information is provided in good faith and is accurate to the best of our knowledge AT DATE OF LISTING. Buyers should verify information, by inspection, prior to purchase. We accept no responsibility for errors.
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