Sub-Atlantic ROV Mohican

The Mohican Inspection Class ROV system incorporates an enhanced propulsion system allowing it to continue working in high current conditions when other systems have to return to surface, providing a customer benefit of reduced vessel time and costs.

Enquiry

Description

Mohican was specifically developed to cope with the fast moving and unpredictable turbid waters of the southern North
Sea. The ‘dynamic vector’ feature enables the operator to adjust thruster angles on the fly for agile manoeuvring and the
3000v 400Hz power system is particularly suited to long tether excursions and deep liveboating operations. The subCAN
control system provides advanced diagnostics, precise vehicle control and reduced reactive maintenance. Thus, the benefit
of increased dive time, reduced vessel standby and operating costs. The system can be supplied as free flying or with
Tether Management System.

Standard System Equipment
Dual 1 atmosphere electronics pods / subCAN control, protection & diagnostics system
Camera Pan & Tilt Unit
1000m / 35Kg standard payload buoyancy

Operational Equipment (Optional)
6 station combined valve pack / HPU for auxiliary hydraulics
Torque tool / manipulator / cutter / FMD / AXVX skid options
Pipeline inspection / cable tracking skids
Scientific sensor / sample collection skids
Submarine rescue pod / threat detection options
HD / stereo / PATZ / multi-beam / digital stills camera interfaces
Type 2 cage Tether Management System
Live boat winch / integral cabin & LARS options

Standard System Equipment
1 atmosphere electronics pod / subCAN control, protection & diagnostics system
Camera Tilt Unit
Low mass 15 Kw/3000v / 400Hz transformer
2000m / 35Kg standard payload buoyancy
Adjustable ‘dynamically vectored’ thrusters
Narrow gauge 16.5mm tether
Operational Equipment (Optional)
Combined 6 station valve pack / HPU for auxiliary hydraulics
Torque tool / manipulator / cutter / FMD skid options
Survey pod / navigation skid options
Pipeline inspection / cable tracking skids available
HD / Stereo / PATZ / Digital / Acoustic camera interfaces
Type 1 or 2 cage Tether Management System
Live boat winch / integral cabin & LARS options

Control System and Features
Hands free navigation / station keeping
Power management and system protection
Live monitoring and diagnostics

Telemetry
Single pass to four pass fiber optic upgrade available
Ethernet / CWDM options for expansion of sensor suite
4 x video channels , 2 x RS 485 channels, 4 x RS 232 channels (1 dedicated to subCAN)

Additional System Options
300m Buoyancy set (50 Kg payload)
3000m Buoyancy set (30Kg payload)
Digital Video and Survey Database options

Operational Skids
Forum provides a range of operational skids for each model of Observation ROV, including the following options:
Pipeline Inspection (boom arms / TS440 etc.)
Seabed Survey – multibeam / gradiometer / profiling sonars etc.
IRM – Manipulator / Jetting / Dredging / Cutting / Cleaning
Flooded Member Detection / AX,VX ring changeout
Torque tool & verification unit
Fluid Injection for BOP testing etc.
Submarine rescue pod delivery
Sample collection & storage / scientific instrumentation
Bespoke skids to customer requirements

Technical information

Dimensions
Length: 1150 mm
Width: 770 mm
Height: 800 mm
Standard Buoyancy Depth: 2000 m
Deep Water Buoyancy: 3000 m
Shallow Water Buoyancy depth: 300 m
Weight in Air: 340 kg
Standard Payload: 35 kg
Deep Payload: 30 kg
Shallow Payload: 50 kg
Power Required 440vAC 3ph 50/60Hz 15Kva
Thruster Horizontal: 180 mmØ
Thruster Vertical: 180 mmØ
Bollard Pull – Nominal
  Forward: 110 kgf
  Reverse: 110 kgf
  Lateral: 110 kgf
  Vertical: 75 kgf
Surface Speed – Nominal 3.0 Kt = 1.5 m/s
Turning rate 120º per second

Datasheet

Mohican Datasheet