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VM Operations - 333 kHz ADCP

Vessel-Mounted Current Profiler

Assists operators on vessels to make informed decisions during subsea operations in areas affected by underwater currents

Description

In recent years, offshore operations have moved farther offshore, often into challenging operational environments. Variable local current and tide patterns make for increased risk, uncertainty, and operational costs. Subsea operations can be limited by these challenges without real-time knowledge of currents.

Using Nortek's renowned Signature ADCP technology, the VM Operations is designed to give offshore operators clear and detailed information on current speed and direction from the vessel to the seafloor. This situational awareness improves efficiency during vessel time. Data can be stored and analyzed during future project planning.

  • Concave transducer design allowing for flush mounting, independent of salinity changes
  • A 333 kHz frequency for an optimal balance in required range, resolution and accuracy for a wide range of operations at the coastal continental shelf
  • Outstanding bottom-track performance, even under challenging conditions
  • Robust sea valve allows mounting without increased draft
  • In-water serviceable, diverless, concept via the DNV type-approved sea valve
  • Unique, easy-to-use graphical ADCP interface for the operator, superintendent or client

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  • Questions about price, availability, and/or retailers
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  • Questions about suitability for your project or application

Specifications

General

Year of last update

2023

Length [m]

0.795

Width [m]

0.34

Height [m]

1.05

Weight in air [kg]

97

Min. operating power [V]

24

True Bottom Tracking Capability

Y

Max. range to bottom [m]

150

Processor/memory

Intel i5/8 GB

Hard disk

SSD, 256GB

Operating System

Windows 10

Housing Material

19" rack-mountable 2 HE

Dimensions

482x87x400 mm

Connections

Power, Signature ADCP, 2x DisplayPort, 1x LAN, 2x USB, 4x RS232, RS422, RS485

Total Weight [kg]

97

Other specifications

Real-time interfacing

VM Operations acquisition software

Min. external power [Voltage]

100

Max. cable length [m]

20

Data acquisition software and processing software

VM Operations acquisition software

Max. external power [Voltage]

240

Auxiliary Sensors

Pressure

Y

Deployment method

Moving vessel

Y

Bottom mount

N

Inline string mooring

N

Data Buoy

N

Marine structures

N

Doppler Current Profiler

Center working frequency [kHz]

333

Max. typical profiling range [m]

100

Number of beams

4 slanted beams

Nadir angle [deg]

25

Max. Number of cells per beam

128

Min. blanking distance [m]

0.5

Min. cell size [m]

1

Max. cell size [m]

6

Compensation for sound speed

Y

Minimum accuracy

0.3% of the measured value

Long-term accuracy

+-0.3%

Maximum sampling rate for Water velocity measurements

2 Hz

Maximum sampling rate for Bottom velocity measurements

2 Hz

Single ping std

0.5 cm/s

Minimum altitude

0.3 m

Maximum altitude

150 m

Velocity resolution of Bottom velocity measurements

0.01 mm/s

Velocity resolution of Water velocity measurements

0.1 cm/s

Pressure

Piezoresistive

Compass and tilt

Solid state magnetometer / accelerometer

Housing

Short, no room for battery

Standard Sensors

Temperature: min [°C]

-4

Temperature: max. [°C]

40

Temperature: uncertainty [°C]

0.1

Compass type

Solid State

Data and Software

Acquisition

VM Operations acquisition software

Configuration

Signature VM ADCP, Alignment offsets, outputs

Display

Vessel track in map, Bottom-track magnitude, direction and depth: (SOG), (COG), Speed Through Water (STW), Mean water column magnitude and direction, 4x depth selectable layer (magnitude and direction), 3D velocity profile (magnitude and direction), 2D vessel cross track current, 24h mean current and direction history (tides), Notes, Echo correlation, Echo amplitude

Status

Signature VM BT and VB + NMEA GGA, HDT, VTG

Output data

NMEA data formats or binary AD2CP with embedded NMEA. DF21 BT proprietary (optional)

Application

Typical applications

Offshore operations

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