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-1800

This IHC S-1800 hydraulic underwater hammer is a universal pile-driving tool for use in air and under water. It is the world’s second largest IHC piling hammer. Recently, the IHC S-1800 hammer was used to drive 104 in diameter piles into the seabed.

The hammer generates an energy level of up to 1800 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.

An extensive pile and hammer monitoring programme was carried out by Conewel B.V. and witnessed by Lloyd’s Register. The energy applied per blow was measured as 1800 kNm for 54 in outside diameter, 2.5 in wall thickness piles.

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Technical specifications  

General

Name IHC S-1800 Hydrohammer

Operating Data


Max. pile energy/blow* kNm
1800
Min. pile energy/blow* kNm
90
Blow rate (max. energy) bl/min
40
*) measured in pile

Weights


Ram mt
71
Hammer (in air) mt
200
Flat bottom anvil mt
18
Pile sleeve mt
41
Total weight in air** mt
259
Total weight under water** mt
204
**) incl. sleeve and ballast

Hydraulic Data


Operating pressure bar
230
Maximum pressure bar
350
Maximum oil flow L/min
4000
Hydraulic supply hose ID (two) in
4
Hydraulic return hose ID (two) in 4

72 In hammer sleeve


IDmm
1860
Maximum ODmm
3500
Length
mm
3970

84 In hammer sleeve


 
IDmm
2160
Maximum ODmm
3900
Lengthmm
3300