Dredging Services

1. General information

2. Procedure for provision of dredging works

3. Statistical information

4. Contact information

 

     1. General information
 

     In the off-season (winter) period the FSUE “Rosmorport” Astrakhan Branch renders to all the interested organizations services for dredging in the Caspian Sea on the contractual basis.
     Dredging works are carried by the Astrakhan Branch with the use of:

     a) Ivan Cheremisinov Trailing Suction Hopper Dredger, equipped with one on-board suction pipe with a dredge drag head on the dredger starboard side;
     b) Urengoy Trailing Suction Hopper Dredger, equipped with one on-board suction pipe with a dredge drag head on the dredger starboard side;
     c) Artemiy Volynsky Non-propelled Dredger, equipped with a powerful cutter with diameter 2.38 meters, with floating and shore pipe with overall length 900 meters,
     d) Petr Sablin Non-propelled Dredger, equipped with a 952 hp milling cutter, floating and onshore pipeline with a total length of 800 meters,
     e) Severo-Zapadny 503 multi-bucket dredger, equipped with a scoop installation, consisting of a multi-bucket chain consisting of 33 scoops, each with a capacity of 0.75 cubic meters,
     f) Kronshlot Self-propelled self-unloading Dredger with a dragging dredger and a ground hold volume of 1,000 cubic meters, as well as a clamshell crane with a lifting capacity of 20 tons and a bucket volume of 3.8 cubic meters,
     g) Severo-Dvinsky-701 Non-propelled Dredger, equipped with a replaceable set of cutter devices (hydraulic and milling), as well as a floating pipeline up to 500 meters long and a shore pipeline up to 100 meters long,
     intended for conduction of repair dredging and filling works in loose soil of I-III groups of soil excavation difficulty (silty loam, sandy loam, flow clay loam and very soft clay loam, loose sand) according to the classification adopted in the Russian Federation, with possibility of soil disposal to underwater waste deposit through the bottom doors (hatches) (Ivan Cheremisinov, Urengoy and Kronshlot dredgers) and pumping on underwater of shore heap with the use of shore or floating pipe (Artemiy Volynsky, Petr Sablin, Severo-Dvinsky-701 and Kronshlot dredgers) or by transshipment to self-propelled hoppers (Severo-Zapadny 503 and Severo-Dvinsky-701 dredgers).
     For transportation of the excavated bottom soil during the operation of the Severo-Zapadny 503 self-propelling multi-bucket dredger and Severo-Dvinsky-701 dredger, the Astrakhan branch has:
     a) self-discharging sludge carrier Azovskaya with a hold capacity of 600 cubic meters;
     b) self-propelling sludge vessel Bolgradskaya with a hold capacity of 500 cubic meters;
     c) self-propelling sludge vessel SSh-74 with a hold capacity of 300 cubic meters,
used for receiving, transporting and dumping the dredged bottom soil through bottom doors (hatches) into the established area of the underwater dump.

 

FSUE “Rosmorport” Dredger Fleet technical characteristics

 

Vessel photo

Ivan Cheremisinov dredger

Vessel length, m

62.5

Vessel breadth, m

12

Height, m

4.9

Maximum/

minimum draft, m

4.2/1.8

Speed,

knots

10

Deadweight, tons

1,397

Displacement, tons

2,566

Navigation area

Sea areas

А1, А2, А3

Endurance, days

20

Hopper

capacity, m3

1,000

Performance

in soil, m3/h

700

Minimum/maximum

soil excavation

depth, m

5/15

Hopper

filling time, h

1

Additional equipment

and parameters

The vessel is also equipped with a cargo crane with maximum lifting capacity 5 tons, has enclosed cab, two removable crab buckets V=3 and 5 m3. Performs soil lifting from the left side of the dredger in the zone of jib reach (when filling the hopper for about 3 hours) in cramped conditions of the seaports water areas (in the vicinity of the hydrotechnical facilities)

Vessel photo

Artemiy Volynsky dredger

Vessel length, m

58

Vessel breadth, m

12.4

Height, m

2.97

Maximum/

minimum draft, m

2.97

Speed,

knots

Non-propelled

Deadweight, tons

-

Displacement,

tons

329

Navigation area

Restricted

R3

Endurance, days

6

Hopper

capacity, m3

-

Performance

in soil, m3/h

1,080

Minimum/maximum

soil excavation depth, m

2/18

Pumping

distance, m

5,000

Hopper

filling time, h

-

Additional equipment and parameters

The vessel is equipped with an accommodation module for the crew rest for 4 persons; equipment for performance measurement and the GPS positioning; telfer crane with maximum capacity 4 tons

Vessel photo

Vessel length, m

72.4

Vessel breadth, m

14.08

Height, m

4.0

Maximum/

minimum draft, m

3.2/1.45

Speed,

knots

8

Deadweight, tons

1,040

Displacement,

tons

2,200

Navigation area

RRR+М-PR 2.5

Endurance, days

20

Hopper

capacity, m3

600

Performance

in soil, m3/h

600

Minimum/maximum

soil excavation depth, m

3/8

Pumping

distance, m

500

Hopper

filling time, h

1

Additional equipment and parameters

Possibility to discharge soil through bottom doors (shaft doors) and pipe

Vessel photo

Petr Sablin dredger

Vessel length, m

61.2

Vessel breadth, m

10.5

Height, m

2.8

Maximum/

minimum draft, m

1.8

Speed,

knots

Non-propelled

Deadweight, tons

139

Displacement,

tons

464

Navigation area

KE*R3

Endurance, days

5

Hopper

capacity, m3

-

Performance in soil, m3/h

850

Minimum/maximum

soil excavation depth, m

3/18

Pumping

distance, m

3,000

Hopper

filling time, h

-

Additional equipment and parameters

The vessel is equipped with a residential module for crew rest for 4 people, performance measurement and GPS positioning equipment

Vessel photo

Vessel length, m

55

Vessel breadth, m

11

Height, m

15.95

Maximum/

minimum draft, m

2.28/2.14

Speed,

knots

10

Deadweight, tons

115

Displacement,

tons

1,000

Navigation area

Inland waterways of class “L”, “R”, “O”, “M”, sea areas for vessels of class “O-PR” where it is allowed to navigate in rolling sea with a wave height of 3% probability of no more than 2.0 m

Endurance, days

6

Performance in soil, m3/h

550

Minimum/maximum

soil excavation depth, m

-/10

Additional equipment and parameters

Cargo crane with a lifting capacity of 9 tons; Cargo boom with a lifting capacity of 3 tons

Vessel photo

Vessel length, m

56.2

Vessel breadth, m

11

Height, m

4.44

Maximum/

minimum draft, m

2.8/3.7

Speed,

knots

10

Deadweight, tons

1,068

Displacement, tons 1,825

Navigation area

R1

Endurance, days

6

Hopper

capacity, m3

600

Vessel photo

Vessel length, m

55.55

Vessel breadth, m

10

Height, m

4.44

Maximum/

minimum draft, m

2.3/3.6

Speed,

knots

7.5

Deadweight, tons

888

Displacement, tons 1,433

Navigation area

R2

Endurance, days

6

Hopper

capacity, m3

500

Vessel photo

Vessel length, m

50

Vessel breadth, m

10.2

Height, m

2.7

Maximum/

minimum draft, m

1.1/2.25

Speed,

knots

6.48

Deadweight, tons

600

Gross capacity,

tons

281

Navigation area

Inland waterways of class «О» / А1

Endurance, days

6

Hopper

capacity, m3

317

Vessel photo

Vessel length, m

60

Vessel breadth, m

14

Height, m

5

Maximum/

minimum draft, m

4.25/2.95

Speed,

knots

10

Gross capacity

1,663

Hopper
capacity, m3
1,000

Navigation area

А1, А2, А3

Endurance, days

7 (for household waste)

Maximum
performance
in soil, m3/h

1,000

Minimum/

maximum

soil excavation depth, m
4/20

Pumping distance, m

1,500 m via onshore or floating pipeline or to shore using Rainbow nozzle up to 60 m

Hopper
filling time, h

1

Crew, persons

12

Additional equipment
and parameters

The vessel is equipped with a grab crane with a lifting capacity of 20 tons and a bucket volume of 3.8 m3

Vessel photo

Severo-Dvinsky-701 non-propelled dredger

Vessel length, m

55

Vessel breadth, m

11

Height, m

4

Maximum/

minimum draft, m

1.39

Speed,

knots

non-propelled

Gross capacity

855

Deadweight, tons

341.5

Displacement, tons

1,012

Navigation area

«О», «R», «L» with the ability to navigate in broken ice up to 10 cm

Endurance, days

20

Hopper capacity, m3

-

Performance
in soil, m3/h

700

Minimum/

maximum

excavation depth, m
up to 10

Pumping distance, m

1,000

Hopper
filling time, h

-

Additional equipment and parameters

The vessel is equipped with a bow crane with a lifting capacity of 8.9 tons and a stern crane arm with a lifting capacity of 2 tons

 


     Dredging works are carried out by the Astrakhan branch on the basis of certificate of admission to a self-regulatory organization union “Interregional Union of Special Construction Organizations” No. 402 of May 03, 2017 issued by the self-regulatory organization - non-profit partnership “Baltic construction complex”, and in accordance with the requirements:

     - RD 31.74.08-94 “Technical instructions for the production of marine dredging works”;
     - RD 31.74.04-2002 “Technology surveying works in conduction of dredging works and depth control for the safety of navigation in the seaports and on the approaches to them”;
     - RD 31.74.09-96 “Standards for marine dredging works”.
     - StO 14649425-0005-2019 «Dredging in seaports and on approaches to them».

 

    2. Procedure for provision of dredging works 

 

    The Astrakhan Branch renders dredging services to all interested parties on the basis of the concluded Contract for conduction of dredging works (hereinafter – the Contract)
    To conclude the contract, the costumer shall file a request to the Astrakhan Branch by mail or fax: +7 (8512) 58-57-76, or a scan by email: mail@ast.rosmorport.ru. The request will be considered within a month and in the absence of technical restriction for possibility of provision of the requested services, and in the availability of all the presented by the costumer documents necessary for the Contract conclusion, the Astrakhan Branch sends to the costumer two copies of the Contract for signing or a reasoned refusal to conclude the Contract. The signed by the costumer Contract shall be returned to the Astrakhan Branch by mail or courier within ten days (for foreign costumers – within a month) at the address: Kapitana Krasnova st., 31, Astrakhan, Astrakhan Region, Russia, 414016.

 

    Dredging works are provided by the Astrakhan Branch according to procedure and on terms stipulated in the concluded Contract.


    Information on the cost of dredging works carried out by the Astrakhan Branch is given in section “Harbor Dues and Tariffs of the Astrakhan Branch”.

 

     3. Statistical information

    Information on the volume of dredging works carried out by the Astrakhan Branch

Year Volume of performed dredging works, thousand m3
2012–2019 ⇲
2012 486.8
2013 769.4
2014 1,600
2015 4,080
2016 5,600
2017 4,500
2018 2,698
2019 2,842
2020 3,308.7
2021 4,209.8
2022 5,035.2
2023 10,000

 

     4.Contact information

     For more information on procedure of the conduction of dredging works by the Astrakhan Branch, please, contact the Astrakhan Branch Monday to Friday from 9:00 to 18:00 Astrakhan time by phone (lunch break from 13:00 to 13:45:
     +7 (8512) 58-57-13;
     +7 (8512) 58-48-21, extension 201,
     or send a request by fax: +7 (8512) 58-57-76, or email: mail@ast.rosmorport.ru.