Underwater Services

UnderWater Services for ship repair are a specialized maritime solution provided by professional diving contractors, allowing vessels to be inspected, maintained, and repaired without the need for dry docking. These UnderWater Services are carried out by highly trained commercial divers who operate below the water’s surface using advanced tools and equipment to restore structural integrity, clean hull surfaces, replace damaged components, and ensure the vessel remains safe and fully operational.

Through reliable UnderWater Services, shipowners can significantly reduce downtime and operational costs, as repairs and maintenance are completed while the vessel remains afloat. This efficient approach enables faster return to service, minimizes disruptions, and helps maintain high standards of safety, performance, and regulatory compliance.

Certified Diving Company

NSD | Nick Segredakis Diving Ltd fully complies with all applicable regulatory requirements for Underwater Services and the repair of underwater welded structures. The company has been awarded the Attestation with reference number LPR.410.00.075 by the Bureau Veritas Classification Society.

With this certification, NSD | Nick Segredakis Diving Ltd becomes the first diving company in Greece to receive approval from a member of the International Association of Classification Societies (IACS) for performing permanent underwater repairs on ship hulls while the vessel remains afloat.

UnderWater
Services

υποβρυχιες εργασιες

Hull Cleaning

The accumulation of marine organisms on a vessel’s hull increases hydrodynamic resistance, reducing overall performance and resulting in lower speed, decreased power, and higher fuel consumption.
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Propeller Polishing

The surface roughness of a propeller directly affects a vessel’s performance and fuel efficiency. Poor propeller maintenance can result in a power loss of up to 5%.
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Inspections & Measurements

Inspections approved by all Classification Societies.
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Propeller & Ropeguards

Propeller repair work, as well as replacement and restoration of rope guards.
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Technical UnderWater Services

Approved welding methods, Non-Destructive Testing (NDT), and watertight underwater repairs.
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Equipment

We use modern professional tools and high-standard equipment, allowing us to intervene quickly and efficiently in every task.

Why choose us?

Experienced Team

Full Service

Fast Responce

Secure Results

UnderWater Services

Hull Cleaning

Marine fouling is the accumulation of marine organisms, such as algae, barnacles, and mussels, on a vessel’s hull. This phenomenon significantly increases hydrodynamic resistance as the ship moves through the water. The added resistance reduces the vessel’s overall performance by lowering its speed and requiring more engine power to maintain normal operating conditions.

As a result, fuel consumption rises, operating costs increase, and mechanical components may experience additional wear. Through professional Underwater Services, regular underwater inspections and hull cleaning can be performed to prevent excessive fouling, improve efficiency, reduce fuel usage, and maintain optimal vessel performance.

Underwater Ship Repair | Hull Cleaning
Underwater Ship Repair | Propeller Polishing

UnderWater Services

Propeller Polishing

Propeller polishing is a fundamental maintenance procedure that helps maintain a vessel’s optimal performance and fuel efficiency. Over time, propellers develop roughness due to corrosion, marine fouling, and surface deposits, which disrupt smooth water flow and reduce propulsion efficiency. Even minor surface imperfections can increase resistance and decrease thrust, forcing the engine to work harder to maintain speed.

A poorly maintained propeller can result in power losses of up to 5%, leading to higher fuel consumption and increased operating costs. As part of professional Underwater Services, regular propeller polishing restores a smooth surface, improves hydrodynamic performance, enhances fuel economy, and ensures the vessel operates at maximum efficiency.

UnderWater Services

Inspections & Measurements

Underwater inspections and measurements are critical procedures for assessing a vessel’s condition and structural integrity while it remains afloat. These inspections are carried out by specialized professional divers using advanced equipment to examine the hull, propeller, rudder, sea chests, and other submerged components for damage, corrosion, or wear.

As part of professional Underwater Services, all inspections and measurements are conducted in accordance with standards and procedures approved by recognized classification societies, ensuring accuracy, reliability, and full regulatory compliance. This process allows shipowners and operators to identify potential issues early, maintain high safety standards, and avoid costly repairs or operational delays.

Underwater Ship Repair | Underwater inspections & measurements
Underwater Ship Repair | Propeller Temporary Repair

UnderWater Services

Propeller & Ropeguards

Propeller and rope-guard maintenance and repair are essential services for the safe and efficient operation of a vessel’s propulsion system. Damage to propeller blades, such as bends, cracks, or surface wear, can reduce propulsion efficiency, increase vibration, and lead to higher fuel consumption.

Rope-guards and rope-cutters play a critical role in protecting the propeller and shaft from entanglement with ropes, nets, and debris, which can cause serious mechanical damage or operational delays. As part of professional Underwater Services, the underwater repair and installation of these components allows for immediate corrective action without the need for dry docking, helping to restore optimal performance, enhance safety, and minimize vessel downtime.

Certifications for UnderWater Services