Underwater Ship Maintenance and Repair

SeaTech has over 25 years of experience in innovative, technical commercial diving and marine services, providing a full range of underwater ship maintenance and repair solutions for all types of vessels.

Professional

We ensure our technicians and divers are trained and certified in a wide range of skills and have years of experience.

Certified

We only use qualified staff for underwater repair services and replacements, and we are certified by Lloyds classification for I.W.S. inspection.

Comprehensive

We perform a broad range of services, including underwater welding and cutting, and machinery repair.

Innovative

We can find a creative solution to even non-standard cases, all within budget and time-frame.

Experienced

We have a deep understanding of the shipping business, and understand how vital it is to keep to your schedule.

Available

We are ideally placed in locations throughout Israel from multiple bases. We answer calls 24 hours a day, 7 days a week.

Propeller Repair, Polishing & Inspection

Our propeller repair services offer the highest quality underwater propeller maintenance, cleaning and polishing, completing tasks that were previously only available in drydock. We provide you with topside monitor video inspection before and after polishing, and a detailed written report, complete with photographs, with insight into any anomalies sighted during the inspection.
We offer:

Polishing:

4-person teams providing multi-stage micro-polishing of all surfaces including boss and cone, using increasingly finer grit diamond and silicate discs.

Value repair solutions:

These include in-water removal and installation, underwater cutting of bended or damaged blades, fairwater cup installation, etc.

Underwater Hull Cleaning Services and Maintenance

Keeping your vessel clean is an essential part of ensuring your ship is running at peak performance. Marine fouling can be abrasive to the hull of a ship, disrupting the laminar flow and creating drag, accumulation, and corrosion. This has a direct impact on the fuel consumption, and can lead to a fuel penalty of anywhere between 10%-30%. Our expert divers use patented hull surface cleaning machines, globally recognized as the most effective way to restore vessel performance. These include: 

Liqui Burst:

We use contactless hull cleaning under low pressure. This system uses steam instead of brushes, which is the most delicate dry dock and underwater hull cleaning technology available on the market today, capable of removing anything from light slime to heavy barnacles. It’s perfect for silicone paint.

Hydraulic cleaning:

Our multi-brush system can perform hull cleaning services on your vessel in a matter of hours.
Our new Smart Kart cleaning system is designed to protect the hull and the anti-fouling and to be able to reach almost any area of the hull.

Underwater Welding Services

Underwater welding services are used for temporary or permanent repairs of any cracks found in the hull of a vessel or rudder blade of a ship. It can also be used for cathodic protection or other shell plating repairs. SeaTech is certified and experienced in both dry underwater welding and wet welding. We use specially designed cofferdams and hyperbaric chambers for replacing shell plating sections underwater, as well as creative custom fabrication of habitats on-site to complete complex out-of-the-box projects.
Our services include:

Wet welding:

We implement both temporary and permanent underwater repair services, through direct exposure of the diver and equipment to the underwater environment. Wet welding is faster and more cost-efficient than dry underwater welding.

Dry underwater welding:

This includes permanent repair of shell plating and appendages, in a unique chamber that allows the work to be completed after the water is removed. This offers higher quality results as there are no sea currents or contaminants involved and hydrogen levels are much lower.

Specific underwater repair services:

We offer installation, replacement and repair of hull apertures such as discharges and sea chests, as well as anode installation and replacement, and installation of non structural components such as rope guards and fairwaters.

Underwater Maintenance and Inspection

As part of our underwater repair services, SeaTech provides thorough underwater maintenance and inspection solutions, including in-water survey solutions, cleaning, and maintenance solutions for a wide range of needs. We use still and video color photography documentation with a unique two-way communication system. Our commercial diving and marine services are second to none, and include:

In-water survey solutions:

IWS inspections for extension of class, as well as pre-purchase and post-charter surveys, or specialist surveys specific to requirements. We offer NDT and complete running gear inspections, pre- and post-dry dock inspections, damage assessments, bottom surveys, and hull coating inspections. Post inspection, we provide confirmation and certification, or if necessary, a thorough report of any issues alongside recommendations and a quote for mitigation and response.

Value repair solutions:

Our comprehensive and sophisticated repair capabilities include the in-water removal and installation of propellers, zinc anode replacement, underwater transducer replacement and repair, suction and discharge of seachests, and the locating, assessment and repair of underwater oil leaks. We also offer salvage services for lost anchors, gangways and other equipment from vessels, and can provide inspection and repair in flooded ballast tanks, both in-port and underwater.

Available 24/7. Let us know your needs. Get in touch.

Contact us: