Seatools is a subsea technology company that provides high-end solutions for a wide range of underwater challenges. The majority of solutions they deliver are custom-made and cater to markets ranging from aquaculture to offshore oil and gas. DROMEC Winches has developed a special umbilical winch for Seatools.
The depth of the sea is a determining factor for placing offshore wind turbines. Foundations are realized by driving so-called pile casings into the seabed, which generates significant vibrations that can disrupt marine life. These vibrations need to be minimized as much as possible. Using a specially developed bubble curtain, where air is blown into the water through holes, the vibrations are dampened. To supply air to the system, a 150-meter-long hose is extended from the sea vessel. DROMEC Winches has developed an umbilical winch for this application.
As the bubble curtain descends to the seabed, the electric umbilical winch automatically pays out the hose using Constant Tension. This CT function monitors the preset maximum allowable tension on the hose, thereby preventing damage. With a pulling force of 1500 kg and a hose width of 90 mm, it is a relatively large system. In this project, DROMEC also provided special controls so that the client can remotely operate the machine. In case of unforeseen extreme weather conditions, an “hammerlug” coupling can be used to disconnect the air hose from the winch and float it overboard. Additionally, the winch is equipped with a spooling mechanism to ensure the hose is neatly wound on the drum. An additional spool guide prevents damage to the umbilical hose. The entire system is compactly built within a shipping container frame, making it easy to transport and relocate during offshore operations.
Paul, engineer, says,
“Seatools is a great company, and there is much appreciation for their quality and expertise. DROMEC Winches aligns well with Seatools in terms of mentality, engineering, controls, and assembly, making it a pleasant collaboration!”