Seaway Heavy Lifting, part of Subsea 7 Renewables & Heavy Lifting Business Unit, is awarded the sizeable contract for the transport and installation of 90 WTG foundations and two offshore substations  Read more
Our highly skilled and motivated on- and offshore professionals are passionate to work on detailed, effective and maximum added value solutions.
We in-house operate high quality fulfilment equipment like hammers, upending tools, generators and ILT’s in order to work as efficient as possible.

IHC S-2500

This IHC S-2500 hydraulic underwater hammer is a universal pile-driving tool for use in air and under water. It is the world’s largest IHC piling hammer.

The hammer generates an energy level of up to 2500 kNm. One advantage of this type of hydraulic hammer is that the energy applied per blow can be continuously adjusted from 5 to 100% during the piling operation. The hammer is computer controlled, which enables the operator to adjust the hammer’s performance parameters very precisely. The computer registers every blow so that an accurate pile report can be created.

The hammer can be equipped with the world’s largest sleeves which are currently 6,5 meters in diameter.

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Technical specifications  


Name IHC S-2500 Hydrohammer

Operating Data

Max. pile energy/blow kNm
Min. pile energy/blow kNm
Blow rate (max. energy) bl/min
*) In relation to the oil flow


Ram tons
Hammer (incl. ram, in air) tons
Hammer (incl. ram, in salt water)
(only if fully submerged)

Hydraulic Data

Operating pressure bar
Maximum pressure bar
Maximum oil flow L/min