Mar in co d.o.o. is a company specializing in underwater construction and underwater reconstruction.
Including the planning and construction, inspections, maintenance and reconstruction of underwater structures, installation of floating pontoons, conducting underwater research, sampling, photography and TV recording, underwater search and diving training.
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The company Mar in co d.o.o. was founded in 2014 and specializes in underwater and marine construction.
For over 35 years, our group of divers has been engaged in carrying out various underwater works in the sea and inland waters on the territory of the Republic of Slovenia and abroad.
As part of our main activities, we have been working with the operators of all Slovenian ports and marinas over the course of many years. Carrying out various underwater works, such as inspections, measurements, pontoon and mooring installations, cleaning and restoration, salvage and raising of sunken vessels. In the Port of Koper and the Izola Shipyard, we also carried out various underwater works, which the clients ordered directly or indirectly through other contractors.
For many years, we have been conducting inspections with technical reports and video recordings, laying and reconstruction of suction, meteor and sewage pipelines. We also carry out inspections and cleaning of underwater omissions and shafts, inspections and restoration of high barriers with injection, gluing and sealing with epoxy resins and sealing with hydro-active polyurethanes.
We design, build and maintain various breeding facilities for marine organisms. For many years, we have also been a contractor for underwater construction and maintenance work in marine fish and shellfish farms in the Piran Bay.
We provide underwater assistance at the facilities of Drava powerplants Maribor, Sava powerplants Ljubljana and Nuclear power plant Krško. We are also the founding members of the Association of Professional Divers of Slovenia.
Underwater Work
underwater construction
underwater installations
underwater reconstruction of walls, columns, fences, bridges, piers, canals, pipelines
underwater inspections
underwater photography and TV recordings
pouring concrete under water
assembly of steel lining and steel formwork under water
underwater cutting with electrodes and diamond tools
underwater welding
underwater drilling with pneumatic and hydraulic drilling machines
gluing and sealing of cracks with epoxy resins and hydro-active polyurethanes and underwater injections with cement masses
underwater excavations
underwater sludge pumping
raising sunken vessels
underwater sampling and monitoring
underwater assistance in archaeological research
underwater searches
Port Services
installation of floating piers and marina equipment
manufacture of moorings for vessels
maintenance of moorings for vessels
raising sunken vessels
inspections of the underwater parts of vessels
Mariculture and Fisheries
stakeout and installation of shellfish farms and fish farms
maintenance work in shellfish farms and fish farms
Our Diving Team References
01
Construction of coastal walls
underwater work in the cladding and concreting of the massive concrete coastal wall at the Delamaris factory in Izola
underwater work in the cladding and concreting of the thin-walled reinforced concrete coastal wall in the city harbour in Izola
underwater works in the restoration of the coastal wall in Marina Portorož - driving AB piles and making a new belt foundation
underwater works in the restoration of coastal walls in Marina Izola
diving works in the restoration of coastal walls in the port of Bar in Montenegro
underwater works in the reconstruction of the port of Katarina in Ankaran
underwater works in the reconstruction of the fishing port of Koper and Izola
underwater works in the reconstruction of the customs pier in the port of Piran
underwater works in the reconstruction of the main pier in the port of Piran
underwater works in the comprehensive arrangement of the pier of the Faculty of FPP Portorož and GEPS Piran in Portorož
02
Installation of underwater pipelines and installations
Installation of numerous sewer outlets in Slovenia, Croatia, Montenegro and Bulgaria
The most important sewer installations:
Tivat in Montenegro (Φ 630 mm, length 3600 m, up to a depth of 45 m)
Ston in Croatia (Φ 400 mm, length 900 m, up to a depth of 72 m)
Piran in Slovenia (Φ 630 mm, length 3600 m, up to a depth of 25 m)
Koper - Žusterna in Slovenia (Φ 800 mm, length 450 m, up to a depth of 13 m)
Izola in Slovenia (Φ800 mm, length 550 m, up to a depth of 17 m)
Balchik in Bulgaria (Φ 800, length 275 m, up to a depth of 10 m)
03
Reconstruction of underwater pipelines and installations
Reconstruction of numerous sewer outlets in Slovenia, Croatia and Montenegro
The most important reconstruction of sewer:
Budva in Montenegro (Φ 500 mm, length 2400 m, up to a depth of 42 m)
Petrovac in Montenegro (Φ 300 mm, length 1600 m, up to a depth of 42 m)
Čanj in Montenegro (Φ 630 mm, length 1700 m, up to a depth of 41 m
Piran in Slovenia (Φ 400 mm, length 3600 m, up to a depth of 24 m)
Piran in Slovenia (overflow pipeline Φ 400 mm, length 700 m, up to a depth of 20 m)
Izola in Slovenia (Φ 500 mm, length 400 m, up to a depth of 14 m)
Izola in Slovenia (Φ 800 mm, length 550 m, up to a depth of 17 m
Excavation of a canal and installation of a water pipe line on the island in Budva in Montenegro
Installation of suction lines for swimming pools and heat exchangers in Lovran near Reka in Croatia, Dubrovnik in Croatia, Hercegnovi in Montenegro, Bernardin near Piran in Slovenia and Portorož Marina in Slovenia.
04
Various underwater assembly works
for the Ministry of the Environment, Space and Energy at the time, we manufactured and installed a special gate for the inflow facility on the ground outlet at the Mola water reservoir near Ilirska Bistrica
for the Ministry of the Environment, Space and Energy of Slovenia, we designed, manufactured and installed a stretch of 500 mm steel pipes for the Klivnik reservoir
repeated manual closing and opening of the gate in the inflow facility of the Klivnik reservoir
manufacture and installation of a special gate for the inflow facility of the Vanganel reservoir, and replacement of the outflow valve on the same facility
we regularly work at both Drava and Sava Power Plants and at the Krško Nuclear Power Plant, where we carry out various inspections, measurements, sealing, cleaning and restoration.
at the Krško Nuclear Power Plant, we also carried out the technically extremely demanding work of covering the thresholds of the flow fields with steel sheets, which we welded, screwed and sub-injected under water
underwater installation of the desilting pipeline at the Krško Nuclear Power Plant
underwater installation of auxiliary sluice gates at the Medvode, Vuhred, and Zlatoličje hydroelectric power stations
05
Maintenance work
multi-year maintenance of marking buoys on the borders of nature reserves and cultural monuments in the Slovenian sea
multi-year maintenance work on the mooring buoys in the Port of Koper
several years of regular underwater maintenance work on installations in all three Slovenian marinas - Portorož, Izola and Kopermulti-year maintenance works at the city ports of Piran, Izola and Koper
repair of cracks and maintenance of high barriers by injecting hydro-active polyurethanes into cracks at the Zlatoličje hydroelectric power plant, the Formin hydroelectric power plant, the Varaždin 1 hydroelectric power plant, the Mavčiče hydroelectric power plant
sealing shafts and pipelines with epoxy resins and hydro-active polyurethanes
cleaning sediments from wells, pipelines, siphons and underground pools with pneumatic membrane pumps
06
Activities in ports and marinas
installation and reconstruction of floating piers with all anchorage, mooring equipment and communal equipment in marinas: Portorož, Izola and Koper in Slovenia, Monfalcone in Italy, Rovinj in Croatia, Maddalena Island in Italy, Lago di Garda in Italy, Rimini in Italy, Budva in Montenegro, Aden in Yemen, Tulcea in Romania and Nessebar in Bulgaria
cooperation in the installation of floating piers for the nautical fair in Split, Croatia and Marina Portorož, Slovenia
construction of a pedestrian bridge at Šmartinsko lake
construction of a floating port on the Ljubljanica river in Ljubljana
construction of mooring systems in the ports of Piran, Portorož, Izola and Koper
07
Some of the more interesting work done
cutting a wedged steel pipe when making a pile Φ1800 mm with a wall thickness of 20 mm at a depth of approx. 20 m. We cut with special electrodes from the inside of the pipe towards the outside (the pipe was part of the system for making piles for the highway bridge over the Sava River near Ljubljana)
cutting a wedged steel pipe when making a pile Φ 1500 mm with a wall thickness of 40 mm at a depth of approx. 30 m at Bonifika in Koper
cutting of bent steel sheet piles in the Mura river at the construction site of the highway bridge near Murska Sobota in conditions of a barely manageable river flow, (total length of cut approx. 20 m)
salvaging (raising) several sunken vessels (up to 13 m long)
taking samples of soil sediments in the Škocjan Bay near Koper with tubes 2 m long, samples were repeatedly taken in the Port of Koper, at the Badaševica estuary in Koper and also elsewhere in the open sea
restoration of the siphon system in Lake Bled to a depth of 36 m (the water in the lake is significantly cleaner since the restoration)
draining sediments from the siphon under the river Rižana in Luka Koper. The tunnel with a profile of 100 x 120 cm and a length of 75 m was completely clogged with sediments, which had to be removed with a special pneumatic pump
draining sediments from the siphon in Celje and sealing the pipeline under the river Savinja
immersion of the dead humpback whale and dolphin and the subsequent lifting of the bones, which were cleaned naturally for the Natural History Museum of the Republic of Slovenia
multi-year monitoring of the populations of Zebra mussels on the Drava River
planning, construction and maintenance of the Fonda fish farm and shellfish farms in the Piran Bay and shellfish farms in the Strunjan Bay in Slovenia, fish farms and shellfish farms on the island of Hvar and Ston peninsula in Croatia
Lean Fonda, CEO of Mar in co d.o.o. holds a BSc in biology and as a professional diver continues the family tradition in the field of diving and marine biology.
Since 1997, he has been continuously carrying out underwater work in Slovenia and abroad.
