• News


    Stay updated with GKC Repairs & Maintenance's latest news, events and works.


Full ahead

The pandemic that started in 2020 has affected the entire global economic activity in various ways. COVID-19 has multiple and far-reaching consequences and as the pandemic crisis was spreading, the activities of shipbuilding and repair companies have been severely affected. One year later, in June 2021 with pandemic's related slowdown, GKC’s activities has returned to almost full capacity. Having taken all the necessary protection measures and informing our personnel and customers accordingly, we continue vigorously and hope for the continuous resumption of work in our industry.

GKC implementating measures against COVID-19

With a sense of corporate responsibility and keeping in mind current developments combined with state guidelines, we would like to inform you that GKC Repairs and Maintenance LTD proceeded to a series of preventive measures with the aim of respecting, protecting the health of all our fellow humans and our responsibility to the human resources of the company and our clients for treatment of Coronavirus (COVID – 19).

More specifically our company has taken the following preventive measures:

  • Limited appointments at our company premises. Telephone communication and web meetings are favored. Technical and operations department remains at your disposal daily while meetings will be limited to the most needed.
  • Antiseptic fluids have been placed at the reception area and at the entrances to each area of the company for use by visitors, clients and staff.
  • Cleaning of offices and communal areas has been intensified.
  • Communication with the competent services has been established and any further action deemed necessary will be taken.

These days, the need to maintain our temper seems more urgent than ever. Information from reliable sources can help in this situation. Covid-19 has entered our daily lives and it is important that we all act in the right way of high individual responsibility & seriousness, maintaining all required safety measures to ensure our health safety.

Brief of Projects Spring 2020

There have been some very busy months with interesting projects, which enabled GKC to proceed with some key advances. Challenging technical issues remain on every clients requirements list.

Some of the project carried our were:

  • Water blasting and coating carried out on 116K & 103K DWT Tanker vessels on deck , including outfitting and WBTS. Project was realised during sailing, with time adjusted according to the vessel’s schedule.
  • Cargo holds treatment works were completed on a 50K DWT Cargo vessel in less than about 4 days. Waterblasting at 1200 bars carried out, followed by coating. Side shell was also treated.
  • Within 12 days, overhauling of Yanmar 6N21L-EV was completed, as well as block, bedplate and crankshaft replacement.

Above all, our company is trying to maintain a high level of safety and environmental protection.


We are pleased to announce our participation at Posidonia 2020, which will be held at Athens Metropolitan expo from June 1st to June 5th. We will be glad to see you in our stand no:3.153.

During the exhibition, we plan to share details of our recently acquired capabilities as it is mentioned in our interview at Posidonia newsletter, issue 01, February 2020. 

Season Greetings

The end of the year brings no greater joy than the opportunity to start a new season with new experiences, challenges in work, friends and associates. For that, GKC takes the opportunity to thank all our business associates, clients and friends for all their faith and trust.
May your Christmas and New Year be filled with joy, happiness and success.

Visiting Offshore Energy Exhibition and Conference (OEEC) 2019

Offshore Energy Exhibition and Conference (OEEC) is where the energy transition takes place. Between more than 550 exhibitors from around the world, present their newest services, projects and innovative products. GKC Repairs and Maintenance Ltd was there to see technological developments / entrepreneurship, to seek potential collaborations and of course to visit old friends and partners.


Why choose GKC repairs and maintenance?

Why choose GKC repairs and maintenance?

  • We make decisions based on creating and fostering a long-term relationship with you, not to make a quick buck.
  • We don’t have a slogan, because we hope you’ll remember us by how we treat you, not by a tagline.
  • We will never commit to a project that we are not able to handle at the highest level.

  • We sweat the small stuff. Because little details can make a big difference.

  • We’re constantly working to improve our services to you by……



"What have we been up to?" - First Quarter 2018

The first quarter of 2018 pushed GKC forward on multiple aspects:

- GKC has made a successful transition from ISO 9001:2008 to ISO 9001:2015. The ISO has been accredited by Lloyd's Register. You can ask for a copy of our certificate to update our enlistment as your supplier.

-As Posidonia approach, keep an eye on the exhibition's newsletter for our articles. Don't forget to come and greet us at Hall 3, stand 3.533, during 4-8 June!

- Interested in our latest projects? We are preparing a full semester review, out soon. Contact us to talk about your project and how our specialized personnel can serve your needs.

Brief of Projects Fall 2017

During the last few months, GKC’s personnel engaged with various projects. We briefly list some cases below:

Inert gas generator cooling chamber was replaced within 4 days with 4 fitters/welders on board a series of parcel tankers, 74000 DWT. A wide range of access works carried out in order to perform subject project. 

Main bearings, thrust bearing and big end bearing replacement of a main engines MAN 8L58/64 was achieved in 9 days with 4 engineers on board container vsls.

Urgent repair of main sea water suction piping system with divers assistance. Subject works carried out within 2 days of non-stop work.

Complete overhauling of a MAK 8M43 and M43C (30000 running hrs) i.e. cylinder covers maintenance, cylinder liners removal, main bearings, thrust bearing, big end bearings replacement, as well as crankshaft and camshaft vibration damper replacement was achieved within 14 days with 4 engineers. Subsequent repairs that carried out on the same series of vsls, were the overhauling of auxiliary engines, repairs of cell-guides of cargo holds and other steel and piping works.

Various steel and hydraulic piping repairs on board motor tankers.

All works were delivered on specified time leaving our customers satisfied with the results, looking forward for future cooperation and more projects to come

Stay tuned for future announcements of our projects to come.

GKC New Premises

GKC welcomes you to our brand new premises

As of this week, GKC Repairs & Maintenance Ltd. has relocated to company-owned offices in Piraeus. The renovated space consists of premium offices, with reception, meeting rooms and an exceptional floor garden.

Clients and partners are openly invited to visit our new premises, to enjoy the refreshing atmosphere that inspires to us a new era in ship repairing services. The GKC employees will be glad to welcome you at Leoforos Chatzikiriakou 15-17, Piraeus 185 37, Athens Greece, and show you around!

GKC completing MRV installations

Following the start of the application of the MRV regulation, GKC Repairs & Maintenance Ltd has handled over 25 projects so as the subjected vessels to comply with the new requirements.

The MRV (Monitoring, Reporting, Verification) requires ship owners and operators to annually monitor, report and verify CO2 emissions for vessels larger than 5,000 gross tonnage (GT) calling at any EU and EFTA (Norway and Iceland) port. Data collection takes place on a per voyage basis and starts 1 January 2018, which calls for immediate action by the ship owners. (source: DNVGL.com)

More specifically, in a timeline of 17 months, GKC has been on board 28 vessels, including cargo vessels, container vessels and multipurpose vessels, with two electronic engineers and two certified welders for each ship, and has completed the installation of MRV projects, including the setting and commissioning of the systems.

Currently, the key dates for the MRV are:

·         31 August 2017 – Companies to submit monitoring plans to verifiers for approval

·         1 January 2018 – Vessels to start Per-voyage monitoring and reporting

·         30 April 2019 – Verified annual emission reports submitted to the EC

·         30 June 2019 – Emission data made publicly available by the EC

This cycle will then repeat for subsequent years.

GKC Repairs & Maintenance Ltd, understanding the urgency of the regulatory compliance, stays vigilant for client requests.


The latest months following the exhibition of Posidonia 2016 were very productive for GKC team.

Over the summer season, GKC proceeded and completed a variety of projects on various ports worldwide.

More specifically, GKC team completed projects such as MRV systems installation and commissioning;

EU Shipping MRV Regulation came into force on July 1st 2015. MRV stands for Monitoring, Reporting and Verification of fuel consumption. All Shipping Companies operating in the EU have to develop their monitoring plan until 2017.


 Last but not least GKC team completed overhauling on main and auxiliary engines, various steel and piping works, meeting our customer’s expectations in every project. All works were delivered on specified time leaving our customers satisfied with the results, looking forward for future cooperation and more projects to come. 

GKC's first participation in Posidonia 2016

GKC Repairs & Maintenance Ltd successfully participated in Posidonia 2016 that took place on 6-10 June 2016 at Metropolitan Expo. Hundreds of Greek Shipping Community customers honored us with their presence and turned the GKC stand into an exhibition meeting point and an ideal spot for gathering of old and new acquaintances, problem-solving and target-setting activities as well as exchange of information on market views.

We would like to thank all participants for this impressive outcome and to reassure our clientele that GKC will continue all efforts in order to honor your perennial trust and support. See you at Posidonia 2018!

105000 DW Tanker water blasting and coating project

GKC completed a complex project on a 105000 DW tanker vessel. 

Our technicians proceeded with water blasting and coating on its deck, including outfitting. The whole of the process was realised during sailing, with time adjusted accordingly to the vessel's schedule.

Christmas Surface Protection Project

During Christmas and New Year holidays, GKC was occupied with a project of specialized surface protection on a bulk carrier of 23484 dwt. Waterblasting at 1200 bars has been carried out, followed by coating of side shell and four cargo holds including hatch covers, hatch coaming and cross-decks.

More specifically, on the side shell the common coating specification applied. The initial estimation of cargo holds area to be blasted and coated was mutually indicated at around 45%, however after the first application of waterblasting, the damaged area revealed to be more than 85%. After agreement of both parties on the findings, one touch-up and one full coat was applied.

Cargo holds treatment works were completed within 4 days.


Brief of Projects - Fall 2015

In between the exhibitions, GKC’s personnel engaged with various projects during the last months. We briefly list some cases below:

Main bearings, thrust bearing and big end bearing replacement of a main engine MAN 8L58/64 was achieved in 10 days with 4 engineers.

Complete overhauling of a MAK 8M43 i.e. cylinder covers maintenance, cylinder liners removal, main bearings, thrust bearing, big end bearings replacement, as well as crankshaft and camshaft vibration damper replacement was achieved within 14 days with 4 engineers.

Forecastle steel repair of a multi-purpose vessel, after collision, where approximately 2 tons of steel were replaced at anchorage.

Damage inspection and evaluation of an auxiliary engine MAN B&W 6L18/24.

Various piping repairs of heating coils on board motor tankers.


Stay tuned for future announcements of our projects to come.


PRESS RELEASE - 25th November 2015




The new marine equipment agency in The Netherlands, MAREN (Marine Equipment Netherlands) and GKC Repairs & Maintenance Ltd. In Pireaus, Greece recently agreed to cooperate in the Dutch market.


“The Netherlands is a significant player in shipping in terms of logistics, new building and repair and maintenance, so we are very pleased to have reached this agreement with MAREN. MAREN is an activity of Wolthuizen Marine & Industry B.V. one of the country’s leading business developers in the industry,” said Georgios Chalaris, Managing Director and owner of GKC Repairs & Maintenance.


GKC Repairs & Maintenance Ltd. was established from a Marine Technical Management background to fill the need in the marine industry for highly skilled, efficient, cost-effective Services and ship repairs at the Port of Piraeus, such as Steel repairs, Piping & Boilers repair, Blasting & Coating and general support.

This quickly expanded into Harbour and Voyage Repair and Maintenance, Power Plant maintenance, Refineries maintenance & Factories maintenance. Subsequent developments include the expansion of their international database of permanent candidates from technical (Electrical Engineers, Welders, Fitters, Blaster/Painters, Mechanics, Electricians, Cleaners, Instrumentation Specialists etc) up to senior level (Superintendents, Technical Managers, Ship Repair Managers, New Building Supervisors, Project Managers).


GKC’s track record is very impressive. Companies like Navigia, Tsakos Columbia Shipmanagement, V-Ships, Aegean Shipping, Marlow Navigation and Celestyal Cruises belong to GKC’s customer base. Dutch ship owners will be impressed by the services which have been executed so far and will become even more interested after hearing GKC’s rates”, says Rob Wolthuizen.


More information can be found on http://www.gkc-repairs.com/

GKC Repairs & Maintenance Ltd

Kolokotroni 102-104

18535 Piraeus


Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

tel: +30 2104082161

tel 24 hrs: +30 6940570859


The MAREN website is under construction.

For more information and inquiries please contact:


This email address is being protected from spambots. You need JavaScript enabled to view it.


Phone: +31 (0)6 15840339


Note 1 - The aforementioned press release was sent and published in major maritime publications in the Netherlands, such as the maasmondmaritime.com ( December 1st 2015).

GKC in Europort 2015 in Rotterdam

GKC Repairs & Maintenance just completed its participation in Europort 2015,which took place in Rotterdam. Available at stand 6107, hall 6, GKC represented itself around its pilar values; focus on the peope rather the market. Instead of hiring promoters as it commonly used, the company's owner attended the exhibition and worked along the permanent employees to personally understand our clients and partners' needs. Providing customised care for our stakeholders is a personal business for us. We would like to thank all the amazing people we met and got to know better in Europort. As for those we did not get the chance to meet in person, we put our trust on a future event. In the meantime, you can always email us with your demanding projects' specifications to receive a quotation and to be able to compare our prices.

A glance at GKC in Offshore Energy Exhibition & Conference 2015

Offshore Energy 2015 opened with a bang. The first exhibition day contained many highlights. Visitors, delegates and exhibitors from all over the world were welcomed in the Amsterdam RAI to experience the ever-growing Offshore Energy market, to do business with over 650 companies in four large halls and to attend technical sessions, panels and master classes. After the success of the first day, we continued OEEC with a great second day. GKC, with stand 8.016 at hall 8 - pictures attached-, had the opportynity to talk to and network with clients, partners and fellow exhibitors. No matter where in the world, clients and partners are more likely to turn to a trustworthy individual they know they can depend on, for personalised attention and tailored response to their needs. And this is the part GKC strives to excel in. In addition to competitive prices and exceptional delivery of services, personal relations with our partners and clients are important to us. So we make sure we take advantage of opportunities like this to get to know them better. With all the highlights of the event and the people we got the chance to meet, we can look back at a very succesfull Offshore Energy 2015. See you next year!


Summary of projects March-August 2015

The last semester has been very productive for GKC Repairs & Maintenance Ltd, as our teams were occupied with various projects, acquiring new skills and adding important experience to their personal CVs, and to the company’s professional bucket list. To be more precise, GKC completed worldwidely standard tasks of main and auxiliary engines overhauling on board vessels of major companies. Our welders and pipe fitters also proceeded with projects of piping modifications, on demand of customers’ request to make adjustments according to the new IMO Marpol regulation 14 regarding the SOx emissions. Steel works were a standard process, such as cell guides repairs, forecastle damages and WBT steel renewal,etc. These various projects have since been delivered with quality results on time. What was exciting was the Installation of new M/E fuel consumption optimization systems under the supervision of the maker’s service engineers, a project that required 3 personnel and approximately 390 hours per vessel to be completed. On a final analysis, this semester has been representative of GKC’s vision. Having visited more than 10 ports in 6 months, our devotion to customer care has earned us participation in not only standard, but also complex projects, providing GKC with unique opportunities to evolve constantly. We thank our customers for their trust.

Contact us for more information