MV Investigator • Geotechnical Vessel Logo

MV Investigator • Geotechnical Vessel

Vessel ID
IMO 8020795
Vessel Snapshot
MV Investigator
Vessel Category
Geotechnical Vessel
Vessel Operator
Geoquip Marine
Call Sign
Build Year
Class Society
The MV Investigator is a four point moored permanently mobilised geotechnical drilling and survey vessel fitted with a GMR300 heave compensated marine drill rig located over a central moonpool. The GMR300 design is based on over 30 years' experience of designing, building and operating such rigs.

Geoquip Marine created the GMR300, a fully heave-compensated, offshore geotechnical drilling system. The GMR300 is suitable for conducting geotechnical drilling and sampling in all soil conditions and for borehole depths down to 300m. The rig has a Dando 500 top-drive power swivel and a minimum of 400m of 5½” API drill string onboard.

Key Features
  • 4-point mooring
  • Fully heave-compensated marine drill rig (GMR300)
  • High reaction 20t seabed frame/drilling template
  • Borehole depth 300m capability
  • Downhole piston/push and percussion sampling
  • Downhole WISON-APB cone penetration testing (CPT) system
  • Wireline rock coring
  • Comprehensive onboard soils testing laboratory
Activities & Capabilities
Drilling ● Geotechnical Surveys ● Offshore Support
Current Location
Main Dimensions
Length Overall
59.4 m
14 m
Max Draft
4.3 m
Gross Tonnage
1,306 t
1,129 t
Free Deck Area
410 m2
Max Speed
10.8 knots
Total Accommodation
34 berths
Machinery & Propulsion
Main Engines
2 x KHD SBV6M 628 (956 kW each) 2 x 520 kW shaft
Auxiliary Engines
2 x 520 kW (380/220V 50Hz) 1 x 170 kW (380/220V 50Hz)
Bow Thrusters
404 kW varispeed
Emergency Generator
1 x 96 kW (380/220V 50Hz)
Fuel Oil
506 m3
Fresh Water
277 m3
Navigation & Communication Systems
Communication Systems
SSB transeiver/receiver
Debeg 7500/2340
Fleet 55 satellite system for email/fax/telephone
Deck Machinery & Equipment
Equipment & Machinery
Moonpool ● Offshore Laboratory
Equipment & Assets
Drilling & Sampling
Geoquip Marine have designed and built a fully heave-compensated, offshore geotechnical drilling system base around the GMR series. A major consideration in the design of the rig is to reduce mobilisation time and cost in logistically challenging locations by creating a set of simple system components which minimise the requirements for interfacing ... Morewith the vessels services.

The GMR300-type geotechnical drilling rig and associated equipment can deploy in excess of 360m of drill string. The GMR300 Series is configured to handle our standard drilling and down-hole sampling, coring and in situ testing tools. A comprehensive range of wireline downhole sampling and testing tools is available including wireline piezocone penetration testing (PCPT, piston sampling, push sampling, wireline core barrel, and percussion (hammer) sampling. All downhole tools (coring, sampling, PS suspension logging) are fully compatible within the 5½" or 6⅝" API drill string.
Cone Penetration Testing
Geoquip Marine have developed a 200kN Seabed Cone Penetration Testing System (GMC201) capable of operating in water depths up to 800m (which can be extended to 2,000m on demand), providing a push capacity of 200kN (20t). This enables the recovery of in situ soil engineering data to a depth of 40m or more below the seabed (depending on soil conditions).... More

The GMC201 Seabed CPT unit has two electrical motors which power the chain drive system (CDS) and the piezoelectric cone (PCPT) into the soil.

Key Features

200kN (20t) thrust capacity

Depth rating to 800m (2,000m optional)

Electrically-driven chain drive system (CDS)

Penetration to +40m below seabed (depending on soil conditions)
Geoquip Marine have developed a 200kN Seabed Cone Penetration Testing (CPT) system (GMC200) capable of operating in water depths up to 2,000m providing a push capacity of 200kN (20t). This enables the recovery of in situ soil engineering data to a depth of 40m or more below the seabed (depending on soil conditions).... More

The GMC200 unit has a subsea hydraulic power unit (HPU) which is mounted on the subsea frame and provides power to the chain drive system (CDS) to push/pull the CPT string and clamping force onto the CPT string by means of hydraulic cylinders.

Key Features

200kN (20t) thrust capacity

Depth rating to 2,000m

Chain drive system (CDS)

Penetration to +40m below seabed (depending on soil conditions) 
Sensors & Instruments
Geoquip Marine own and operate a Geovista DPS Downhole P&S sonde which allows simultaneous measurement of P & S wave velocities within the borehole environment. It comes with one transmitter and two receiver modules. The energy source of the transmitter operates as a dipole source. Each receiver contains two transducers, one for the detection ... Moreof the compression waves (P) and the other for the detection of the shear waves (S). Each transducer responds to different frequencies. The sonde is stopped at selected depths where acoustic data is acquired in different modes that allow the determination of these P and S velocities. This is done without the need for clamping and this method gives better accuracy and resolution than other seismic methods.

The performance of the system is engineered to give good results in the slower formations encountered at shallow depths while also performing well in deeper formations with higher velocities. The data acquired by the system is recorded in the industry standard SEG2 file format, allowing many commercially available packages to read the data.
Client OfficeDuty Mess RoomGalleyInternetMeeting RoomRecreation RoomStoresTVWorkshop
Safety & Rescue Systems
Life Rafts ● MOB Boat
Mooring Systems
4-Point Mooring
4 x 3t Flipper Delta HHP anchors
Case Studies
Geoquip Marine were mobilised from Europe to complete the technically challenging project for a large port extension in Chile. The scope included working in close proximity to existing structures and in a harsh environment, close to the surf zone. Careful planning and efficient working practises allowed for the operation to be completed in the project ... Moretimeframe identifying and confirming the geophysical data that had been previously obtained. Due to the previously obtained data Geoquip followed shallow gas procedures ensuring Health and Safety remained at the forefront of their operations. PS logging was also completed in the sands at 5 locations to 30-40m.
Related Vessels
Vessel Operator:
Geoquip Marine
Vessel Operator:
Geoquip Marine
Contact Us
+41 71 227 40 00