Underwater work

UAB Garant Diving, owned by the Garant Group, has been carrying ship repair, inspection and maintenance and seabed surveys for over 30 years, using professional equipment and diver services. Exclusive equipment and methods, long-term experience and qualified divers enable projects to be implemented not only in the Baltic states but also in other European ports. The company performs hydro-construction projects in the Baltic states, construction of port infrastructure and reconstruction of quays.

 UAB Garant Diving is the operator of two multicats, Mintis and Baltic Worker. In 2017, the company consolidated its position in the market by acquiring a crane ship, Baltic Worker, for operative implementation of projects.

projects outside of Lithuania
projects in progress
implemented projects
diver teams


Services provided

Hydro construction work
  • Installation of submarine electrical and other types of cables and measuring equipment
  • Power plant maintenance
  • Technical maintenance of oil platforms in the preferential taxation area
  • Construction and repair of port infrastructure
  • Reconstruction of quays
  • Dredging of the port area
Underwater construction and repair works
  • Class surveys of ships (underwater inspection)
  • Written work reports with photos and videos
  • Visual hull assessment for possible external damage
  • Underwater complete hull cleaning
  • Propeller polishing and cleaning of the ship’s exterior cooling gratings
  • Covering (sealing) of the vessel's cooling gratings
  • Welding and cutting
  • Maintenance of the hull and the steering wheel
  • Anode replacement
  • Propeller blade straightening
  • Propeller reforming
  • Repairs of propeller damage
  • Ship salvage/ lifting
  • Search and lifting ashore of lost steel anchors, chains, etc.
Vessel charter services
  • A 35-meter-long modern crane ship Baltic Worker is designed for various underwater tasks, ship maintenance and repair. Baltic Worker has four main engines for navigation and maneuvering, and another four to operate the equipment. The lifting capacity of the crane is 40 tons. The ship also has a powerful dredger and a sonar for the bottom monitoring and controlling the underwater work;
  • Exploration ship Mintis
Fleet management
  • Periodic maintenance of the LNG carrier from 2014;
  • Periodic maintenance of Būtingė Oil Terminal.


Project name:
Stone removal in the navigation channel
Implementation date: 2010 m., vykdomas periodiškai
Location: Klaipėda
Brief description of works:

Stone removal in the navigation channel in Klaipėda was also performed earlier (from 2010) using a non-self-propelled crane, a tugboat and a divers’ motorboat. In 2017, UAB Garant Diving purchased the multipurpose crane ship, Baltic Worker, equipped with a divers’ station, which enables the company to remove stones quickly and cost-efficiently.

Project name:
Provision of anchored walls
Implementation date: 2017
Location: Klaipėda
Brief description of works:

UAB Garant Diving’s diver team carried out the provision and testing of anchored walls in quay No. 145 in Klaipėda in a very short timescale. The works were performed in three shifts and completed by the deadline specified in the contract.