Trusted Marine Technical Services Across the World’s Leading Ports
DNNKC Marine Services delivers end-to-end technical solutions for vessels operating major shipyards and ports worldwide — ensuring reliability, safety, and compliance at every stage.
Our Expertise
We specialize in complete technical supervision, maintenance, and dry-docking coordination for all types of vessels.

DNNKC Marine Services
Trusted Technical Solutions for the Global Maritime Industry
We specialize in complete technical supervision, maintenance, and dry-docking coordination for all types of vessels. Through our exclusive network of certified workshops and cooperating shipyards, we deliver precision, transparency, and timely execution in every project.
Core Services
A full range of complete services for your company
Underwater & Coating Services
Advanced inspection, cleaning, and corrosion protection solutions.
Our services Why Shipowners Choose DNNKC
We guarantee modern approach & sustainable results
Technical Excellence
Led by seasoned naval professionals and marine engineers.
Strategic Partnerships
Priority access to leading shipyards across China.
Transparent Operations
Clear reporting, real-time updates, and cost control.
Compliance Assured
Smart planning that minimizes downtime and delays.
Efficient Turnaround
Smart planning that minimizes downtime and delays.
AMONG OUR PARNTNERS
GoldenSea Shanghai
GoldenSea is specialized in MC engines as well as all makers D/Gs overhauling, repairs and troubleshooting. Can provide in situ machining for all type of engines. Also in co-operation with DH Global spares manufacturer can provide any spare for majority of makers.
Hilong Shanghai
Group of holding enterprises specializing in businesses related to the oil and natural gas industries. Being at the painting domain since 2015 have developed among other protective and functional coatings also full range of high performance marine coatings covering universal epoxy primers, cargo holds coatings, certified ballast tanks coatings, antifouling with long term protection service life up to 90 months also acrylic and polyurethane finishes for cabin, superstructure and deck.
Ruitai Nantong Group
Nantong Taida Ship Engineering Co., Ltd, which was founded 26years ago, mainly doing voyage afloat repairs and technical services at most of the ports in China Nantong Jinxiang Ship Service Co., Ltd, a firm approved by MSA, mainly engaged in ship's slop, sludge removal, and disposal, tank cleaning etc., at the ports here in China area.
Saier Nico Zhenjiang
Saier Nico Electric & Automation specializes in providing marine HV/LV Switchboard, Automation System and the last years have developed AMP for new- buildings & retrofit vessel.
Jiangsu Nanji
Jiangsu Nanji mainly produces and operates ship anti-pollution, ship power propulsion system shaft and rudder systems, and other machinery products like BWTS and Nitrogen Generators. The last years have also developed ESD (energy saving device) Hull Duct.
DHF piping
DHF piping (Japanese company) specialized in rubber lining of pipes
DeckMac
DeckMac Marine a specialized hydraulic workshop for hatch covers, cranes, grab, Ro-Ro and windlasses/winches can provide 1. Pre-docking inspection 2. Service attendance during dry-docking 3. Workshop overhauling bases at Zhoushan area 4.Voyage repairs 5. Spare parts supply (original and OEM)
Nantong Ruida Navigation
Nantong Ruida Navigation Machinery Co., Ltd, a joint venture with Danish company, mainly for producing PV Valves and aluminum alloy vent heads for both water and oil tanks. Approved by ABS, DNV etc. Classification Societies.







