Buoyancy Point System -
Draft gauges are very useful for determining buoyancy level during leg/spudcan extraction phase of a jacking cycle.  This can allow calculation estimates on buoyancy load on legs and spud can. It can be used to limit how much draft the vessel hull is allowed by design while keeping the vessel at its limit to aid in leg extraction. This system shows live indications of when a leg is freed from the sea bed. In larger vessels it can be very difficult to determine when a leg has become free. This system makes it very clear on screen what is going on at all times. This combined with accelerometers (included in Inclination Monitoring system below) work together to offer detailed information and visualization on screen. Operator awareness of this type can help prevent leg damage during leg extraction.  

Inclination Monitoring System -
Inclination monitoring is very important to a jacking system and is used during all operating and non-operating modes of the jacking system. We offer scalable versions of this system to match the control design. In its simplest form a large bullseye type bubble level is mounted on the control console. This manual level is incorporated into all control designs and is used as a visual gauge even if electronic sensor failure occurs. In addition to this bubble level we also supply a very accurate sensor array of solid state accelerometers and gyros at 3 points on the hull to calculate and determine a very accurate inclination of the vessel at all times and remove wind and wave interactions for a steady readout. This can be combined with additional GPS sensors to increase accuracy (sold with both the sonar system and navigation system discussed further below).  This system is used to maintain vessel inclination during jacking cycles and determine vessel movement during leg removal from the sea bed, through alarms and monitor leg settlement during preloading, and once the vessel is jacked into position and the jacking system disabled, this system can remain active to monitor the vessel and through alarms for any further unwanted leg settlement that could lead to a catastrophic leg failure. During heavy wind and wave action oscillation occurs in the vessel movement. To account for this and prevent unwanted alarms we use algorithms to calculate and remove this undesirable motion from the sensor readouts and maintain accurate inclination readouts. 
 
Live Load Monitoring System -
This system requires torque load sensors built into the jacking tower and gearing. Retrofitting a system with this option may require the addition of a torque sensor array in the jacking towers or to be retrofitted to the existing gearing setup. There are different ways of monitoring load with varying degrees of accuracy. live load monitoring allows load monitoring even when the system is not jacking allowing load measurements to be taken at all times. Standard load monitoring may require the system to be actively moving in order to take a measurement on the system. Load monitoring can be very useful in determining deck load placement, preload determination and dutycycle measurement and to help determine limits on deck load that may have been miscalculated. Load monitoring is required 4 leg systems that must balance the load between the legs and preload based on hull weight and varying the load per leg. 
 
Deck Load & Calculation System -
This system is scalable and can be tied into the load monitoring system however in its simplest form it allows for the calculation of deck load and Preload info – calculation & Center of gravity based on deck load placement. In its expanded form we can incorporate preload and tank level indication system showing the liquid level in all tanks through the vessel and center of gravity calculations based on this information. This system requires tank level sensors to be installed in each tank. We can supply and service this complete system if desired. Having this system displayed in the jacking control offers space saving in the bridge and overall cost savings. It can also save time during preloading operations. A fully automated tank management system is also possible in a new build application.
 
3D multibeam Sonar & Nav System -
We offer 3D visualization package with a jacking control that incorporates a 3D model of the entire vessel and live interaction with the seabed, water level, waves etc. This system is fully dynamic and allow zoom, pan, rotate, etc. allowing the operator to inspect different angles and views in detail. The multibeam Sonar adds to this package building an actual 3D representation of the sea bed beneath the vessel as the vessel passes over it. Know what is down there before you lower your legs. In liftboat applications this is extremely useful as the vessel is often jacking in areas that are unknown. A custom sensor setup can also allow for live changed below the vessel. This system also shows the leg settlement into the sea floor and shows the depressions left after extraction. This is useful as the vessel may often jack in this location more than once. As the vessel travels over more and more areas a sea floor map is generated and stored in the system for reference and viewing. This map can then be laid out into Navigation Software that place the detailed sea floor map into the 3D navigation software and mapping package. Please note that third party payment agreements are required to maintain accuracy of this mapping system and is sold separately.