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Dredging Fleet

Hopper dredger "Belomorskiy", project 469

Type - twin-screw, self-propelled trailing suction hopper dredger dragging suction pipes equipped with hydro-scourers, bow thruster.
Designation: dredging job with carriage of ground in hold for unloading either by opening of 14 single bottom doors in row (seven doors portside and seven doors starboard side), or using self discharger (pumps) for deposition of pulp through the sludge line at the distance up to 700 meters with height of stack place up to 4 meters.
Allowed weather conditions: wind force up to 5 Beaufort scale with max height of wave 1,75 meters (pitching) or 1,25 meters (rolling).

№ Vessel Year Call Sign
1 Belomorskiy 1985 UHYW
Hopper dredger "Belomorskiy"

Vessel SCHEME

Vessel SCHEME

SPECIFICATIONS

Technical Indicator Data
Russian Register class KM ⍟ L1 hoper dredger
Ice class IA
Year built, Builder 1985, Split
Length overall 80,49 m
Beam 15,10 m
Depth 5,60 m
Max Draught at dredging work (Loaded) 5,2 m
Light draft  bow 2,24 m
Light draft  aft 3,48 m
Deadweight summer 2044 t
Gross tonnage 2628 rt
Net tonnage 788  rt
Hopper capacity (full loaded) 1304 cbm
Hopper capacity (up to low level overflow) 750 cbm
Suction pipe diameter 600 mm
Discharge pipeline diameter 600 mm
Dredging pump (number and ouput, h.p./kw) 2 * 340/250
Dredging capacity (max) * 1000 cbm per hour *
Pumping capacity for deposition of pulp through the sludge line ** 700 cbm per hour **
Max Dredging depth 25 m
Min Dredging depth 5,5 m
Min required Length of dredging area 500 m
Min required area for one hundred eighty degrees turn 140 m
Speed loaded 9,0  knots
Speed in ballast 10,0  knots
Main engines MAN&BV 6S28 LU-4
Number x output 2 * 1510 h.p.
Recommended Oil MDO Dist DMB (ISO 8217/1996)
Fuel consumption (daily):  
  Sailing 9 t
  Dredging 7,78 t
  Deposition through the sludge line 7,78 t
  Stoppage during dredging job 1,49 t
  Idle staying 0,827 t
Bunker capacity 390 t
Fresh water capacity 120 t
Bow thruster 350 h.p.
Crew 20 persons
Endurance of TSHD 30 days
Remarks :
* Dredging capacity depends on type of soil to be dredged.
** Pumping capacity for deposition of pulp through the sludge line depends on length of line as    well as of height of stack place.

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