Our underwater drilling machine is used to install anchoring systems. Underwater anchoring is used to deepen existing quays, increase quay load capacity, extend life spans or optimally design new systems. The machine is completely self-sufficient underwater for underwater drilling. It is fully automated and can be controlled by an operator above water. We can use the machine to load 36 metres of anchor rod. This means we can install 36 metres in one go without taking the machine above water. This complete anchor length is loaded in the carousel. Anchors can be installed from on land (over the top) as well as from a pontoon on the water side. We can install the anchors at angles of 0 and 45 degrees.

We have several anchor drills for installing different types of grout anchors and anchor piles. Our Klemm machines include the types KR805, KR806 and KR807. All machines can be equipped with either a hammer drill or a dual flushing drill motor. These machines can therefore be used virtually anywhere and install all types of anchors and anchor piles. This means we can use our own self-drilling anchors and drill tubular anchors. We always have a solution because we have diverse types and sizes of anchor. For example, we might use a shortened leader or even a long leader with a loading length of up to 7.0 metres. Besides the drill, the equipment includes a grout mixing and pumping unit, a cement silo, an auxiliary crane for inserting the drill pipes, a power generator and various tools that ensure the entire machine is completely self-supporting. To drill tubular systems, we have auxiliary pipes, a special pipe gripper, a water container for flushing water, a reel for inserting strand anchors or a crawler crane for inserting GEWI anchors.

If anchors cannot be installed using a standard anchor drill, we have a drill on a hydraulic excavator. You can then install anchors ‘over the top’ with the machine set up on the high side of the sheet piling. This drill is based on a 48-ton basic machine that is equipped with a leader holding the hydraulic drill motor.

Besides the drill, the equipment includes a grout mixing and pumping unit, a cement silo, an auxiliary crane for inserting the drill pipes, a power generator and various tools that ensure the entire machine is completely self-supporting.

The flagship of our fleet is the Woltman 90DR foundation machine. This piece of equipment consists of a base machine with a leader of 36.0 metres maximum length. The base machine is equipped with a 755-hp Tier 4F engine that can power attachments in addition to the machine. The Woltman foundation machine can be equipped – primarily from our equipment store – with the following attachments:

• PVE-4240-Z quattro-piler pressing machine for vibration-free installation of steel sheet piling.
• PVE RH 45 HS rotary heads for vibration-free installation of Jetmix foundation piles, such as screw injection piles, tubular piles and combi piles.
• Klemm KD2728R hammer drill for installing grout (injection) anchors and anchor piles.
• Junttan HHK7/9A hydraulic pile driver for pile driving foundation piles and subsequent pile driving of sheet piling and tubular piles.
• Dieseko PVE RD260 resonator for installing sheet piling and anchor piles.

Besides the above components, the foundation machine is also equipped with a Woltman DRS-0124 drill recording system.