Marine Insight: Oil Water Separator For Ship

Marine Industry Demand: Oil Water Separator for Ship

Oil water separators (OWS) represent a critical component in the environmental compliance and operational safety architecture of modern commercial vessels. Mandated under MARPOL Annex I, these systems are essential for processing bilge water generated during normal ship operations, ensuring that harmful hydrocarbon contaminants are effectively removed before any discharge overboard. Failure to maintain functional OWS equipment poses severe risks, including catastrophic environmental pollution incidents, significant fines from port state control authorities, vessel detention, and potential suspension of trading certificates. The integrity of the OWS directly impacts a vessel’s seaworthiness; inadequate separation leading to discharges exceeding the strict 15 ppm oil content limit violates international law and jeopardizes crew safety by increasing fire hazards within engine room spaces. Consequently, reliable OWS performance is non-negotiable for sustainable maritime operations and adherence to the global regulatory framework governing marine pollution prevention.

Sourcing advanced oil water separation technology from Hangzhou Star Marine Technology offers shipowners and operators a compelling combination of regulatory assurance and significant cost efficiency. Our manufacturing base in China leverages a mature and highly optimized marine equipment supply chain, enabling economies of scale and reduced overhead costs that are unattainable in higher-wage manufacturing regions. Star Marine utilizes precision engineering and rigorous quality control processes certified to ISO 9001 and CCS standards, ensuring every separator meets or exceeds IMO MEPC.107(49) resolution requirements for performance and reliability. This domestic manufacturing advantage translates directly into a superior total cost of ownership for our clients. The table below illustrates key comparative advantages:

The extended maintenance intervals and readily available genuine spare parts significantly reduce vessel operational disruption and costly dry-docking requirements. Star Marine’s engineering focus on durability using marine-grade materials minimizes wear and extends service life, further enhancing lifecycle value. Our direct export model eliminates multiple distribution layers, ensuring competitive pricing without compromising on the stringent quality control protocols demanded by classification societies. This strategic sourcing approach delivers not only immediate capital expenditure savings but also substantial long-term operational cost reductions through enhanced reliability and reduced lifecycle maintenance burdens. For vessel operators prioritizing both environmental stewardship and fiscal responsibility, Hangzhou Star Marine Technology provides the optimal balance of certified performance, regulatory compliance, and demonstrable cost-effectiveness in the global marine outfittings market. Choosing Star Marine is an investment in continuous operational integrity and sustainable maritime practice.

Technical Specs & Approval

The oil water separator for ship, manufactured by Hangzhou Star Marine Technology Co., Ltd., is a critical component in marine pollution prevention systems, designed to treat bilge water and ensure compliance with international maritime regulations, including MARPOL Annex I. Engineered for durability and operational efficiency, the separator is constructed using high-grade materials to withstand the harsh marine environment. The primary housing is available in either marine-grade aluminum alloy (Alu 5083/6061) or corrosion-resistant carbon steel with epoxy coating, depending on vessel requirements and installation conditions. Aluminum variants are ideal for lightweight applications and vessels with strict weight distribution considerations, while steel housings offer enhanced structural strength for larger commercial and offshore vessels.

Watertightness is a fundamental design criterion for all units. Each separator undergoes rigorous hydrostatic testing at 0.6 MPa to verify integrity under operational pressure. The sealing system employs nitrile rubber (NBR) or EPDM gaskets, selected based on fluid compatibility and temperature range, ensuring zero leakage during continuous operation. The internal coalescing plates are precision-formed from stainless steel (AISI 316) to resist corrosion and maintain separation efficiency over extended service intervals. The separator is equipped with an integrated three-stage treatment process: gravity separation, coalescing filtration, and final polishing via an oil concentration monitor (OCM) to achieve effluent oil content below 15 ppm, meeting MEPC.107(49) standards.

All models are compact and designed for easy integration into confined engine room spaces. Standard dimensions are optimized for ISO containerized transport and onboard handling. The units are mounted on anti-vibration rubber pads to minimize transmission of engine-induced shocks and comply with vibration class BV-1. Electrical components, including level sensors and control panels, are rated IP66 and compatible with 220 VAC / 50 Hz or customized voltages upon request.

Performance specifications, material configurations, and physical parameters are detailed in the following table:

The oil water separator is supplied with full certification, including EC Type Approval, DNV-GL, CCS, and RINA compliance documentation, ensuring global acceptance and seamless integration into newbuild and retrofit projects.

Shipbuilding Solutions

Complete Oil Water Separator Solutions for Shipbuilding and Repair

Hangzhou Star Marine Technology Co. Ltd. delivers engineered oil water separator (OWS) systems that ensure regulatory compliance and operational reliability for new vessel construction and critical repair projects. Our marine outfittings expertise integrates seamlessly with shipyard workflows, providing end-to-end support from initial specification to sea trial validation. For new builds, we collaborate early in the design phase to optimize OWS placement, piping interfaces, and control system integration, minimizing retrofit risks and accelerating delivery schedules. Our compact, modular units conform to stringent space and weight constraints typical in modern vessel architecture while exceeding IMO MEPC.107(49) discharge standards.

In repair and retrofit scenarios, Star Marine prioritizes rapid response to minimize vessel downtime. Our global spare parts network and certified service engineers deploy within 72 hours to ports worldwide, ensuring swift resolution of separator malfunctions or regulatory non-conformities. We conduct thorough system audits to identify root causes—such as coalescer fouling or sensor drift—and implement corrective actions aligned with class society requirements. This proactive approach prevents recurring failures and extends equipment lifecycle, directly supporting shipowners’ operational continuity.

Technical excellence underpins our solutions, with all OWS units manufactured under ISO 9001-certified processes and rigorously tested to simulate real-world bilge conditions. Below are key specifications for our flagship OWS series:

Our engineering team provides comprehensive documentation, including 3D installation models, P&ID diagrams, and class-approved test reports, ensuring seamless integration into shipyard production plans. For repair projects, we offer expedited certification renewal services through our partnerships with major classification societies, eliminating bureaucratic delays. Star Marine’s commitment to rapid technical support—backed by a 24/7 multilingual engineering desk—ensures vessels return to operation with minimal disruption.

From initial consultation to post-installation validation, Hangzhou Star Marine Technology guarantees a unified solution that addresses the dual imperatives of environmental compliance and operational efficiency. Trust our expertise to safeguard your vessel’s bilge water management through every phase of its lifecycle.

Packaging & Logistics

Packaging & Logistics for Oil Water Separators – Hangzhou Star Marine Technology Co., Ltd.

At Hangzhou Star Marine Technology Co., Ltd., we ensure that all marine oil water separators are packaged to meet international export standards, safeguarding equipment integrity during transit. Our packaging protocols are designed to comply with global shipping regulations, environmental conditions, and handling requirements typical in maritime logistics. Each oil water separator is prepared for export using either ISPM 15 certified wooden cases or heavy-duty steel pallets, selected based on equipment configuration, weight, and destination-specific import regulations.

ISPM 15 (International Standards for Phytosanitary Measures No. 15) is strictly adhered to for all wooden packaging materials. This standard, mandated by the International Plant Protection Convention (IPPC), requires that all wood used in crates or cases be heat-treated and officially marked to prevent the spread of pests and diseases through international trade. Our wooden cases are constructed from durable, kiln-dried plywood or solid wood, reinforced at stress points to withstand stacking and rough handling. Each case is internally lined with moisture-resistant barrier film and includes anti-vibration padding to protect sensitive components such as control panels, sensors, and piping connections.

For heavier or skid-mounted oil water separator units, we utilize custom-engineered steel pallets. These pallets provide superior structural support and are ideal for containerized shipping or roll-on/roll-off (RoRo) transport. Steel pallets are treated for corrosion resistance and equipped with lifting points compatible with marine-grade forklifts and cranes. They also allow for secure strapping and bracing, minimizing movement during ocean transit. All steel pallets are designed to meet ISO container dimensions, ensuring optimal space utilization in 20-foot, 40-foot, or high-cube containers.

Our primary export hubs are the major Chinese ports of Ningbo and Shanghai, both of which offer direct global shipping routes and efficient customs clearance procedures. These ports are equipped with state-of-the-art handling facilities for heavy industrial cargo and are compliant with SOLAS and IMDG Code regulations for marine equipment shipments. We coordinate with certified freight forwarders to ensure timely documentation, including packing lists, certificates of origin, and phytosanitary certificates (where applicable), are provided for seamless customs processing.

All shipments are labeled with standardized maritime cargo markings, including handling instructions, weight indicators, and orientation labels, to ensure proper handling from factory to vessel.

The following table summarizes our standard packaging and logistics specifications:

We maintain full traceability and quality control throughout the packaging and dispatch process, ensuring that every oil water separator arrives at its destination in optimal condition, ready for marine installation.

Contact Star Marine

Contact Star Marine for Your Oil Water Separator Export Requirements

As global maritime regulations under MARPOL Annex I intensify, securing a reliable oil water separator (OWS) that meets stringent discharge standards is non-negotiable for vessel operators and shipbuilders. Hangzhou Star Marine Technology Co. Ltd. specializes in engineering Type Approved OWS systems certified by leading classification societies including CCS, DNV, LR, and ABS. Our marine outfittings division ensures every unit adheres to MEPC.107(49) performance criteria while optimizing space, weight, and operational efficiency for diverse vessel types—from offshore support vessels to container carriers. With manufacturing facilities compliant with ISO 9001:2015 and direct partnerships with major Chinese shipyards, we deliver export-ready solutions backed by rigorous factory acceptance testing.

For tailored export coordination, technical validation, or urgent project timelines, direct engagement with our Product Management team eliminates procurement bottlenecks. Kacher YE, Product Manager for Marine Pollution Control Systems, oversees global OWS deployments with 12 years of maritime equipment export experience. He navigates complex regulatory landscapes, customs documentation, and class-specific installation requirements to ensure seamless delivery. Whether you require retrofit integration for aging fleets or newbuild compliance packages, Kacher provides engineering-led consultancy from initial specification through to sea trial support.

Critical export documentation can significantly impact project schedules. Below outlines standard requirements we manage proactively for international shipments:

Do not risk non-compliance penalties or port detention due to substandard separators. Kacher YE will expedite your technical dossier review, confirm compatibility with your vessel’s piping schematics, and align delivery with shipyard critical paths. His team coordinates pre-shipment inspections, arranges INCOTERMS 2020-compliant logistics (FOB Hangzhou or CIF preferred), and provides multilingual operational manuals meeting IMO Resolution A.1070(28). For vessels operating in U.S. waters, we include EPA Vessel General Permit (VGP) addenda at no additional cost.

Initiate your export process today by contacting Kacher YE directly at [email protected]. Specify your vessel type, required flow rate (m³/h), applicable class society, and target delivery window. Responses to technical inquiries are guaranteed within 4 business hours during China Standard Time working hours. For urgent retrofit projects facing port state control deadlines, request a priority case assessment by referencing “PSC EMERGENCY” in your email subject line. Hangzhou Star Marine Technology stands ready to safeguard your operational continuity with engineered separation excellence.