With its modular construction, high power variable frequency, sensor capabilities, and software control, Feritech's vibrocorer is one of the most versatile on the market.
the 3rd generation FT550 lightweight variable frequency high power vibrocorer, leads the market in its technical innovation and performance. The sub-sea equipment is built to withstand the harsh offshore environment and unforgiving handling. Due to its simple to assemble modular construction, the system can be mobilised very quickly for cores of 1-12m.
Our advanced integrated software informs the engineer of the information he needs to ensure efficient, successful and safe deployment and operation.
– Variable frequency of 5 – 50Hz
– High power with up to 75kN thrust
– 1 – 12m modular construction (in 1m increments)
– Rapid mobilisation with plug and play setup
– Change barrels with the frame laid horizontally or vertically
– 2:1 mechanical advantage on lifting wire aiding barrel extraction
– Quick barrel release system
– 300m – 7,000m depth rating available
– Stable operation in up to 10 knot tides
– Consumables compatible with our gravity and piston corers
– Frame hot dip galvanised to BS EN ISO 1461:2009
|Weight in water||1,142kg||1,437kg||1,697kg||1,968kg||2,395kg|
|Weight in air||1,470kg||1,845kg||2,145kg||2,476kg||3,017kg|
|Base frame diameter||1.8m||1.8m/3.5m||3.5m||3.5m/7.2m||7.2m|
|Surface finish||Hot dip galvanise to BS EN ISO 1461:2009International® epoxy marine coating|
|Voltage||Options for all power supply voltages (110v 220v 415v single or three phase)|
The table above shows a selection of the available frame configurations accommodating barrel lengths between 1m to 12m in 1m increments
High power, variable frequency
Feritech Global’s vibrocorer is the only system on the market with an integrated high power variable frequency system. By using this unique variable frequency system, sample disturbance is minimised, ensuring a high quality sample regardless of high power settings.
“built with reliability to the core”
Modular and very quick to mobilise
The system is modular and very easy to use. It can be configured to collect cores from 1m to 12m long in 1m increments and is very quick to mobilise either onboard or on the quayside.
The frame is made from common modules that can be quickly configured to collect the required core length.
Barrel swap with frame laid horizontally or standing vertically
Unlike any other vibrocorer system, our vibrocorer can be deployed and recovered to deck in the horizontal or vertical axis. There is usually no need for a LARS either. Barrels can be swapped in either position meaning that the user can choose the best deployment and recovery method for the vessel they are operating from.
Real time sensor data display and logging
Our cutting edge sensor suite gives you operational data in real time and is also logged if you want to analyse it later.
Real time monitoring of barrel penetration allows the operator to maximise their operational efficiency by knowing exactly when the required depth has been reached. The monitoring of penetration guards against equipment damage. The system can also automatically stop when the required depth has been reached.
|Sensor range||Configured to same length as barrel (1m sections)|
The vibrocorer has an integrated depth sensor that accurately records and displays the distance it is from the sea surface. These are plug and play units and are user changeable for different water depths as required.
|Accuracy||1% of range|
|Sensor ranges available||0-200/0-1000/0-3000/0-5000/0-7000 metres|
The inclinometer inside the subsea electronics housing monitors the vibrocorer frame inclination. This is used to ensure that the frame has not fallen over. It also allows the user to ensure that the frame is sitting level and is not suspended on any obstruction such as a boulder or sand wave.
The software monitors the power output and frequency of the vibrocorer head and reports in real time, the effective thrust and frequency the system is outputting.
The vibrocorer constantly monitors frame settlement into the seabed and reports this to the user. This data ensures that the core can be recorded at the correct datum.
The integrated altimeter reports the altitude of the frame from the seabed as it is deployed and recovered.
|Sensor range||9m as standard or 49m available on request|
The system monitors voltages, temperatures, humidity inside the electronics housing and even the quality of the umbilical communication. All this data is reported back to the diagnostics screen with the Feritech HUB control software.
The topside controller shows the engineer the information from all the sensors described above, this information will ensure he has all the information to hand for an efficient, successful and safe deployment and operation of the vibrocorer.
The controller uses our unique Feritech HUB software, which is a plug-in and play system that works with the full range of Feritech products, including our other corers, our heatflow system, and our winches. This means a fully integrated offshore system that can be controlled from a single screen.
Quick release barrel system
Our quick release barrel system ensures a fast barrel change optimising equipment up time. Typically a barrel can be changed in less than 1 minute whether the system is being deployed in horizontal or vertical mode.
Our advanced non-return valve is integrated inside the pivoting quick release head ensuring that maximum sample retention is achieved for every core taken. Tests performed have proven that our non-return valve performs as well as a piston in retaining the sample and is virtually setup and maintenance free.
Deep water ready
The system can be used in water depths of up to 600m as standard. There is no problem going deeper as the system has integrated compensation ports. With the addition of our compensator, full ocean depths in excess of 7000m can be achieved.
Heat flow probe
The FT580 heat flow probe produces real time thermal conductivity, spot temperature and thermal gradient measurements within the seabed. The system has been designed to work as a standalone system, or as an add on sensor to Feritech’s range of piston, gravity, and vibrocorers.
For more information view our heat flow page
High performance vibrocorer head
We have designed our latest generation of variable frequency vibrocorer heads specifically for our systems. The composite construction of the dual concentric weights has increased the performance to create an impressive thrust of up to 75kN while reducing the overall system weight by nearly 50%. This performance improvement means that one system delivers high power but is still lightweight and very strong.
The variable frequency control allows frequencies from 5Hz to 60Hz and has been used time and time again to acquire high quality core samples from silts, sands and gravels to chalk and even stiff clays.
All our consumables are available from stock for global delivery and fit all our corers (piston, drop, gravity and vibrocorer) ensuring you always have spares but at the same time minimising the amount of consumable stock required onboard to successfully complete your survey.
Quick release plug in
Quick release plug in
|Barrel||Inner diameter (mm)||93.6mm||117mm|
|Outer diameter (mm)||101.6mm||127mm|
|Material||Steel or stainless steel|
|Available lengths||2m, 3m, 4m, 5m, 6m||2m, 3m, 4m, 5m, 6m|
|Can the barrels be joined together?||No||No|
|Maximum barrel length||12m||12m|
|Liner||Inner diameter (mm)||84mm||106mm|
|Outer diameter (mm)||89mm||112mm|
Black or transparent PVC
316 marine grade tainless steel
|Basket finger thickness||
0.1 – 1.7mm (0.25mm Feritech standard)
|Shoe||Material||Heat treated hardened steel or 316 marine grade stainless steel|