Improvements have been made to the capabilities of the Marshbuggy and we now have the ability to attach spud legs to the rig in order to provide increased stability and anchorage.
In April 2015, we successfully conducted testing with the Marshbuggy in the Swan River using the spud leg attachments.
Typically we cannot carry out testing while the rig is floating as the rig needs to be stationary to alleviate any uncontrolled lateral movement of the CPT rods. By attaching the spud legs, it provides a quick and effective anchorage system in shallow, protected waters, where rope anchors are not considered suitable.
As well, in suitable ground, the addition of a suction caisson to one of the legs will provide additional reaction weight.
The spud legs will provide stability for water depths of approximately 4.5m.
Further developments to the spud legs could see us potentially utilizing them to lift the rig to some extent, which would therefore allow us to increase rig reaction weight and gain pushing capacity.