The Red7 Tonjer is a multipurpose offshore support vessel owned by Red7Marine Limited. It was built in 1983 in Norway and converted in 2000. It is flagged in the Isle of Man, classified by DNV, and has a length of 80.77m, breadth of 18m, and gross tonnage of 3349. It supports offshore oil, gas, and renewable energy sectors through offshore diving, subsea construction, inspection, repair and maintenance, remotely operated vehicle operations, and deepwater pipeline burial and excavation.

1. OFFSHORE SUPPORT VESSEL
Red7 Tonjer
Owner:
Red7Marine Limited
.........................................
Type:
Multipurpose / OSV
.........................................
IMO No:
8205620
.........................................
Call Sign:
2BEC9
.........................................
Flag:
Isle of Man
.........................................
Class:
DNV (Norway)
.........................................
OFFSHORE DIVING AND SUBSEA CONSTRUCTION • IRM • ROV • DEEP WATER PIPELINE BURIAL & EXCAVATION
SUPPORTING OFFSHORE OIL, GAS & RENEWABLE ENERGY SECTORS

2. Type: UT 705 1983
Flag/Classification:
Isle of Man
Port of Registry Douglas
Classication DNV (Norway)
Unrestricted navigation
Additional Class notation AUT_UMS; DYNAPOS AM/AT R
..................................................................................................
Main particulars:
Vessel Built Apr. 1983 Norway
Vessel Converted 2000 by Ulstein Verft
LOA 80,77m
Breadth moulded 18,00m
Summer Draft 4,97m
Gross Tonnage 3349 t
Deadweight 2490 t
..................................................................................................
Bridge Equipment:
Auto Pilot Robertson AP-9 MK3
Radar 1 x Furuno FR 28v65S
Radar 1 x Furuno FR 2115X
1 x SIMRAD RGC-12
1 x SIMRAD GC 80
1 x ANSHUTZ Standard 20
..................................................................................................
Machinery:
Main Engines 2 x MAK 8M 453 3000 BHP each
Driving twin C.P.P’s
Rudders 2 x standard rudder type
Bow Thruster(s) 2 x Ulstein 150 TV 800 BHP each
Stern Thruster(s) 2 x Ulstein 150 TV 800 BHP each
Gearbox Frydenbo HS 30x2S
Propellers 2 x variable pitch 600 AGSC
..................................................................................................
Power: BHP 6000
M/E Output (K/W) 2 x 2237 kW (4474 kW)
Main Alternators 2 x 1140 kW + 2 x 254 kW
2 x 1400 kW (shaft gen’s)
Emergency Generator 1 x 89kW
..................................................................................................
GPS Navigator GP-150
Bridge Nav Chart Telchart 2025 (C-map)
Bridge Echosounder Skipper GDS 101
FW Generators Reverse Osmosis
..................................................................................................
Helideck:
Super Puma 19.5m diameter
..................................................................................................
Cargo Deck 550m2
Deck Strength 5 t /m2
Cargo Capacity Summary:
Fuel Oil 900m3
Ballast Water 1815m3
Drill Water 1815m3
Slop 50m3
..................................................................................................
Maximum Speed 12 knots
Crossing/ Service speed 10 knots
Fuel consumption (subject to prevailing weather)
Full Speed abt 12 Tonnes / Day
Service Speed abt 10 Tonnes / Day
DP Mode abt 6 Tonnes / Day
In Port abt 2 Tonnes / Day
..................................................................................................
Loading Gear / Winches:
1 x Anchor windlass 2MB 12H
2 x Capstan CA3K
..................................................................................................
Cranes:
TTS Nordlift crane type GPCFO
SWL 50 t
Wire Type 54 mm
..................................................................................................
Reference system:
3 x DGPS
1 x Taut Wire
1 x Kongsberg HIPAP 500
..................................................................................................
Accommodation:
Total berths 61 (plus 1 hospital)
1 x Hospital
..................................................................................................
OSV Red7 Tonjer

3. Diving & Subsea Division
Office & Yard
Lefevre Way
Gapton Hall industrial Estate
Great Yarmouth
Norfolk
NR31 0NW
Tel: +44 (0) 1493 441454
Fax: +44 (0) 1493 718089
Email: enquiries@
r7moffshore.co.uk
Marine Base
Berth 28
244B Southtown Road
Norfolk UK
NR31 0JJ
Tel: +44 (0) 1493 445 034
Aberdeen Office
11 Abercrombie Court
Prospect Road
Arnhall Business Park
Westhill
Aberdeen
AB32 6FE
Tel: +44 (0) 1224 747777
Email: enquiries@
r7moffshore.co.uk
Head Office
Wrabness
Shore Farm
Wrabness
Manningtree
Essex
CO11 2TG
Tel: +44 (0) 1255 886710
Fax: +44 (0) 1255 886658
Email: enquiries@r7m.co.uk