HIGH QUALITY PROPELLER REPAIR SERVICES

PSOMAKARA Diving Services & Consulting Co has extensive experience in underwater propeller repair, having experienced professional divers with specialized training. Any deformation to the actual shape of the propeller may cause imbalance in its operation, vibrations, which in turn cause an increase of cavitation, loss of thrust control, leading to damage to the tail-end shaft and an increase in fuel consumption. For this reason the tactics of propeller repair is necessary. Propellers should always be kept in excellent condition. The main factors that reduce the optimal operation of the propeller is pollution, cavitation and damage due to hits. Any deformation of the actual shape can cause imbalance and therefore vibration, which in turn causes increased cavitation, loss of thrust control, leading to damage to the tail-end shaft and increase in fuel consumption. For this reason the tactics of propeller repair is necessary. The underwater propeller repair is the fastest, most efficient and most economical way to repair the propeller of the ship, since it keeps it  away from the dry-dock, which on one hand takes a long time and on the other hand has a very high cost.

DAMAGE REPAIR

Usually involves damage caused to the edge of one of the blades.  A ship with bent or cracked blades can suffer severe vibration and cause engine overload at sail. For this reason the propeller repair is necessary to obtain approval from the ship classification society for sailing. Prior to the underwater propeller repairs a detailed underwater inspection is carried out, the problem is analyzed and the best solution for underwater propeller repair is decided in consultation with the technical department of the ship owning company.

CLEANING AND POLISHING

The accumulation of fouling and calcium deposits significantly increases the roughness of the propeller, which results in increased fuel consumption and gaseous pollutants. The more often the ships propeller is cleaned, the more money is saved since the fuel consumption is reduced.

REMOVAL OF FOREIGN BODIES

Removal of foreign bodies such as mooring ropes, fishing nets or lines that are usually tangled in the tail-end shaft or the bow thruster, which are removed by cutting. The entanglement of ropes in the tail-end shaft is a common problem in the cases during ship to ship operations in bad weather conditions. This problem, if not treated quickly may be fatal to the tail-end shaft, as the ropes can melt and go inside it.

THE UNDERWATER BALANCING PROPELLER

The propeller shaft is strained because of the disorder generated from the balance of the weight thereto. Thereby creating hazardous loads on the shaft bearings system due to the constant vibration and the risk of causing serious damage. For this reason it is necessary to balance the propeller (underwater balancing propeller) on the rotating shaft to prevent stress from the centrifugal force, thus contributing to a better hydrodynamic behavior.

CUTTING THE ROPE GUARD

Partial or total cutting of the propeller’s rope guard. Where a mass of big ropes wrap around the propeller (like the ships mooring  ropes), then from the rubbing generated and due to their composition, high temperatures are developed, which are able to deform the propeller s’ rope guard. Such damages to the rope guard can make the tail-end shaft fatal. For this reason it is necessary to swiftly perform partial or total cutting of the rope guard and then replace it.

OUR ADVANTAGE

PSOMAKARA Diving Services & Consulting Co has headquarters in Greece (Piraeus, Chios, Thessaloniki, Crete, Corinth, Nea Karvali, Patra, Volos, Kali Limenes), Togo (Lome), Turkey (Istanbul, Canakkale, Iskenderun), Cyprus (Limassol, Larnaca), Ivory Coast (Abidjan), United Arab Emirates (Dubai), Brazil (Santos), Spain (Palma de Mallorca, Canary Islands, Valencia), Egypt (Suez, Alexandria), Mexico (Veracruz) and bases at New Zealand, Samoa, Kingdom of Tonga and Republic of Fiji, while diving teams are located at regular intervals in ports around the world. The staff communicates in five different languages (Greek, English, French, Spanish, Arabic). Main phone number 24/7: (+30)2104001120, (+30)2104004470 email: info@psomakara.gr

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