About Us
STr Marine comprises a team of highly experienced professionals dedicated to the supply of spare parts suitable for compressors, pumps, separators, deck machinery, and a wide array of other marine equipment.
Our comprehensive product portfolio encompasses a broad spectrum of components compatible with systems from the world’s leading maritime manufacturers. Many of our long-standing partners rely on our expertise for the sourcing, consolidation, and delivery of spares suitable for machinery produced by the majority of brands in the marine sector. Over our 35 years of operation in the maritime industry, we have worked with virtually every shipboard system, as well as selected installations dedicated to the offshore sector.
Nasi partnerzy

Firmy STr i HCP nawiązały współpracę w zakresie dostaw części zamiennych do silników wyprodukowanych w Polsce na licencji Sulzera (powszechnie znanych jako typ Sulzer) oraz MAN Diesel & Turbo SE (powszechnie znanych jako typ B&W). Jako producent silników i ich podzespołów z 60-letnim doświadczeniem, HCP jest gwarantem wysokiej jakości proponowanych części, potwierdzonej certyfikatami HCP. Części klasyfikowane mogą być dostarczone z certyfikatami klasy towarzystw klasyfikacyjnych przynależnych do IACS.
Proponujemy pełną gamę części zamiennych do silników typu A20, A25, AS25, AT25, S20 oraz silników typu Z40 i jego odmian.

Od 2020 roku jesteśmy dumnym członkiem stowarzyszenia EMISA zrzeszającego niezależnych producentów i serwisantów operujących na rynku morskim. Jest to dla nas doskonała platforma do wymiany doświadczeń wiedzy o aspektach praktycznych i prawnych działalności naszej i naszych partnerów, jak i oczywiście networkingu.

Armatorom, którzy zintegrowali zewnętrzne platformy zakupowe ze swoim procesem zaopatrzenia oferujemy współpracę przez dwie z najpopularniejszych platform dostępnych na rynku Shipserve i Procureship. Zapraszamy do współpracy w całym zakresie naszej oferty.
History of the group
STr Shipping and Trading was established as an enterprise specializing in the trade of spare parts and marine equipment.
Completion of our first major modernization project, comprising the complete replacement of the main and auxiliary engines, alongside all associated ancillary systems, on a large ocean-going ferry.
The company expanded its portfolio to include steel fabrication and the manufacturing of steel components.
ISO 9001:2000 certification achieved.
Initiated the expansion of the spare parts range for air compressors.
STr Shipping and Trading strategically reorganized its business, forming three distinct subsidiary companies united under a single corporate group.
STr Marine broadens its product range with the introduction of spare parts dedicated to centrifugal pumps.
Today, STr Marine is an integral part of the STr Group, which encompasses the following entities:
STr Invest
A company specializing in the management of real estate accommodating manufacturing and commercial operations, alongside commercial properties located in the Old Town of Szczecin.
STr Marine
A company dedicated to commercial operations within the maritime market, as comprehensively detailed throughout this website.
STr Production
A CNC machining facility equipped with an extensive, state-of-the-art machinery park, complemented by in-house quality control and an advanced warehousing infrastructure.
Historically, a core segment of STr’s operations encompassed ship repair and maintenance services, including class-renewal dry-dockings executed under the strict supervision of Classification Societies.
Our services catered primarily to shipowners operating vessels within European waters; however, we also established a strong operational presence within the Caspian Sea basin.
In close collaboration with our trusted service partners, we executed a comprehensive scope of works, ranging from structural steelwork, mechanical overhauls, and hydraulic repairs, to advanced automation and complex electrical systems.
Although this branch of our operations has since been phased out, it stands as a powerful testament to our deep technical expertise, competence, and hands-on experience, forming a vital part of our legacy within the maritime industry.
Warehousing and Logistics
Deliveries to STr Marine clients are managed by a dedicated team of specialists within our Order Fulfillment Department. Our company operates under a fully implemented ISO 9001:2015 Quality Management System, under which all shipments are rigorously inspected and packed in strict compliance with internal procedures, international standards, and specific customer requirements.
Powered by the SAP ERP system, all quotations, commercial transactions, and deliveries are processed seamlessly and in a highly standardized manner. Maintaining our own stock of marine spare parts enables us to significantly reduce lead times for selected product groups and provide highly efficient cargo consolidation services for clients located in more remote regions of the world.
Our long-standing partnerships with leading freight forwarders and logistics carriers enable us to deliver goods swiftly, securely, and cost-effectively to any port worldwide.
- Customer service
- Project implementation
Project implementation
Project implementation


