Marine Insight: 12.5Mm Anchor Chain Windlass

Marine Industry Demand: 12.5mm Anchor Chain Windlass

The 12.5mm anchor chain windlass is a critical component of deck machinery systems on small to mid-sized commercial vessels, fishing boats, and high-performance yachts. Its primary function is to deploy and retrieve the anchor and its associated chain efficiently and safely, ensuring the vessel maintains station during adverse weather, emergencies, or scheduled stops. In maritime operations, the reliability of anchoring systems directly impacts crew safety, vessel integrity, and operational continuity. A failure in windlass performance can lead to drifting, collision risks, or grounding, particularly in congested or shallow waters.

The 12.5mm windlass is specifically engineered to handle G30 or G40 grade anchor chains commonly used in vessels ranging from 15 to 30 meters in length. These vessels include pilot boats, supply vessels, research craft, and luxury yachts where space and weight are constrained, but dependable anchoring performance is non-negotiable. The windlass must deliver consistent torque, corrosion resistance, and mechanical durability under continuous exposure to saltwater, UV radiation, and mechanical stress. Hydraulic and electric models are available, with electric variants being preferred for smaller vessels due to their ease of integration and lower maintenance requirements.

Hangzhou Star Marine Technology Co., Ltd. provides high-performance 12.5mm anchor chain windlasses designed in compliance with international marine standards, including ISO 3911, DNV-GL Type Approval guidelines, and CCS certification. Our engineering team integrates hardened steel chainwheels, marine-grade stainless steel components, and IP66-rated electric motors to ensure long-term operational resilience. Each unit undergoes rigorous load testing and salt spray evaluation to guarantee performance in harsh marine environments.

Sourcing 12.5mm windlasses from Star Marine China offers significant cost advantages without compromising quality. Our vertically integrated manufacturing process, strategic location in Hangzhou’s industrial hub, and optimized supply chain reduce production costs by up to 25% compared to European or North American suppliers. Additionally, we offer OEM/ODM support, allowing clients to customize control systems, mounting configurations, and power options to suit specific vessel designs.

The following table outlines the standard technical specifications of our 12.5mm anchor chain windlass series:

By combining engineering precision with cost-effective manufacturing, Hangzhou Star Marine Technology enables shipbuilders and marine equipment suppliers to enhance vessel safety while maintaining competitive pricing. Our 12.5mm windlasses are trusted by clients across Southeast Asia, the Middle East, and the Mediterranean, reflecting our commitment to quality and service in the global marine market.

Technical Specs & Approval

Technical Specifications Overview
Hangzhou Star Marine Technology Co. Ltd. designs and manufactures the 12.5mm anchor chain windlass to meet rigorous international maritime standards for deck machinery. This windlass is engineered for vessels requiring reliable anchoring performance with 12.5mm nominal chain diameter, while maintaining compatibility across the broader 12.5mm to 60mm chain size spectrum. Critical design parameters prioritize operational safety, durability in harsh marine environments, and compliance with classification society requirements including DNV-GL, ABS, LR, and CCS. The windlass adheres strictly to ISO 3911 and ISO 18297 standards for anchor handling equipment, ensuring predictable performance under dynamic loading conditions.

The following table details the core technical parameters for the 12.5mm anchor chain windlass model series. Specifications reflect nominal operating conditions at 25°C ambient temperature and are validated through full-scale factory acceptance testing per IEC 60092-507 for marine electrical equipment and ISO 4413 for hydraulic systems where applicable.

Operational integrity is maintained through precision-machined chain wheel pockets ensuring positive chain engagement without slippage, even under shock loading from vessel motion. The electric drive variants incorporate thermal overload protection and regenerative braking for controlled chain payout, while hydraulic models feature pressure relief valves and anti-cavitation circuits. All units undergo 100% salt spray testing (ASTM B117) for 500 hours and dynamic load cycling validation prior to shipment.

Export compliance is integral to our manufacturing process. Each windlass includes multilingual operation manuals conforming to IMO MSC/Circ.1093 guidelines, with electrical schematics labeled per IEC 60617. Voltage configurations are customized per destination market requirements, and hydraulic interface dimensions follow ISO 6162-1 standards for universal compatibility. We provide complete traceability documentation including material test reports (MTRs) and non-destructive testing (NDT) records for critical weldments, facilitating seamless integration into vessel construction or retrofit projects worldwide.

Hangzhou Star Marine Technology guarantees that every 12.5mm anchor chain windlass meets or exceeds the performance thresholds outlined, delivering dependable anchoring solutions for commercial and offshore applications across global maritime sectors.

Shipbuilding Solutions

Hangzhou Star Marine Technology Co., Ltd. delivers comprehensive deck machinery solutions tailored for modern shipbuilding and marine repair operations. As a trusted provider in the maritime industry, we specialize in high-performance anchor handling systems, with our 12.5mm anchor chain windlass engineered to meet international standards and operational demands across vessel types. Designed for vessels with medium to heavy anchoring requirements, this windlass ensures reliable performance in diverse sea conditions while integrating seamlessly into new construction projects or retrofit applications.

Our 12.5mm anchor chain windlass is built with robust materials and precision engineering to deliver consistent durability and operational efficiency. It supports both electric and electro-hydraulic drive configurations, allowing shipyards and repair facilities to select the optimal power system based on vessel design and energy management strategies. The unit is compatible with ISO and Class-approved anchor chains and features an automatic chain stopper engagement, enhanced brake torque, and fail-safe mechanisms to ensure compliance with SOLAS and other regulatory frameworks.

Star Marine Technology emphasizes rapid response and end-to-end project support. From initial technical consultation to final commissioning, our engineering team collaborates directly with shipbuilders, naval architects, and classification societies to ensure timely delivery and flawless integration. For new builds, we provide full documentation packages including load calculations, foundation drawings, and 3D modeling support. In repair and retrofit scenarios, our team conducts on-site assessments, wear analysis, and customized refurbishment plans to extend service life and restore OEM-level performance.

We maintain strategic inventory of critical components, enabling fast turnaround for replacement units or spare parts—minimizing downtime during vessel maintenance windows. Our global logistics network ensures prompt shipment to major shipyards and dry-dock facilities worldwide, supported by multilingual technical documentation and after-sales service coordination.

Below are key technical specifications for the 12.5mm anchor chain windlass:

Hangzhou Star Marine Technology is committed to delivering integrated, class-approved solutions that enhance vessel safety, reduce lifecycle costs, and support efficient project execution. Whether for new ship construction or critical repair operations, our 12.5mm anchor chain windlass exemplifies reliability, precision, and responsive service—core values that define Star Marine’s role as a strategic partner in global maritime development.

Packaging & Logistics

Packaging & Logistics for 12.5mm Anchor Chain Windlass Exports

Proper packaging and logistics execution are imperative for ensuring the safe delivery of marine deck machinery, particularly robust equipment like the 12.5mm anchor chain windlass. At Hangzhou Star Marine Technology, we implement stringent international standards to protect your investment during global transit. Our packaging methodology is specifically engineered to withstand the harsh conditions of maritime shipping, including vibration, humidity, and handling stresses encountered from factory to final installation.

All windlasses are securely mounted onto heavy-duty, reusable steel pallets conforming to ISO 1161 specifications. These pallets provide a stable base with a minimum load capacity of 1500 kg, featuring reinforced stringers and durable steel plating to prevent deformation. Critical components, including the windlass unit, control panels, and associated hydraulic power units, are then enclosed within custom-fabricated wooden export crates. These crates utilize kiln-dried, ISPM 15 compliant plywood with a minimum thickness of 22mm for structural integrity. ISPM 15 certification is mandatory, verifying the wood has undergone approved heat treatment to eliminate pest risks, a non-negotiable requirement for entry into most global markets. Internal bracing, utilizing marine-grade timber, immobilizes the equipment within the crate, while vibration-dampening materials are strategically placed at stress points. A moisture barrier, consisting of 200-micron polyethylene film, is applied directly over the windlass assembly before final crate sealing to prevent condensation damage during ocean voyages. All exposed metal surfaces receive a corrosion-inhibiting coating compatible with subsequent marine installation.

The following table details the core packaging specifications for the 12.5mm anchor chain windlass export:

Exports originate exclusively from the major deep-water ports of Ningbo and Shanghai, China. These facilities offer world-class container handling infrastructure and direct access to major global shipping lanes. Our logistics team coordinates all inland transport from our Hangzhou facility to the port terminal under secure, tracked conditions. We manage full export customs clearance documentation in strict accordance with Chinese regulations and destination country requirements, ensuring smooth port processing. Standard lead time for port readiness after order confirmation is 10-15 working days, subject to final inspection. We provide comprehensive shipping documentation, including detailed packing lists referencing the ISPM 15 treatment certificate, commercial invoice, bill of lading, and certificate of origin. Hangzhou Star Marine Technology maintains close partnerships with leading international freight forwarders specializing in heavy marine equipment, guaranteeing optimal routing, vessel selection, and real-time shipment visibility for our clients. This integrated approach ensures your 12.5mm anchor chain windlass arrives at its destination port in flawless, ready-to-install condition.

Contact Star Marine

For marine operators and vessel builders seeking high-performance deck machinery, the 12.5mm anchor chain windlass represents a critical component in ensuring safe and efficient anchoring operations. At Hangzhou Star Marine Technology Co., Ltd., we specialize in the design, engineering, and global export of robust and reliable windlass systems tailored to meet the demanding requirements of commercial, offshore, and high-end leisure vessels. Our 12.5mm anchor chain windlass is engineered to deliver consistent performance under extreme marine conditions, combining advanced gear drive technology, corrosion-resistant materials, and precision manufacturing to ensure long service life and minimal maintenance.

Engineered for compatibility with Grade 30, 40, and 70 anchor chains, our windlass systems are tested to exceed international standards including ISO 3912 and DNV certification protocols. Each unit is built with a hardened steel chain wheel, optimized for smooth chain engagement and reduced wear, and features an integrated band brake system to securely hold anchor loads during deployment and retrieval. The 12.5mm model is ideal for vessels ranging from 15 to 25 meters in length, offering a balance between compact footprint and high pulling force, making it particularly suitable for coastal supply vessels, pilot boats, and large yachts.

We understand that every vessel has unique deck layout and operational requirements. That is why Hangzhou Star Marine Technology offers customization options including electric, hydraulic, or electro-hydraulic drive configurations, single or dual drum setups, and flange-mounted or foot-mounted installation designs. Our engineering team works closely with naval architects and shipyards to ensure seamless integration with existing deck structures and power systems.

To support global clients, we provide comprehensive technical documentation, including 3D drawings, load performance curves, and installation manuals. Our quality assurance process includes 100% load testing and non-destructive examination of critical components, ensuring every windlass meets our stringent reliability benchmarks before shipment.

For detailed technical specifications, pricing, or engineering support on the 12.5mm anchor chain windlass, we invite you to contact our Product Manager directly.

For project inquiries, technical collaboration, or OEM/ODM partnership opportunities, please contact Kacher YE, Product Manager at Hangzhou Star Marine Technology Co., Ltd. We are committed to delivering engineered solutions that enhance vessel safety and operational efficiency across global maritime markets. Reach out today to discuss your requirements and receive a tailored proposal.