Marine Insight: Spek Anchor

Marine Industry Demand for Spek Anchors: Critical Safety and Operational Considerations

Role in Vessel Safety and Operational Reliability

Spek anchors are engineered to provide critical safety margins during anchoring operations. Their stockless design eliminates the need for a stock (the horizontal arm), allowing for easier stowage in modern ship anchor pockets and reducing deck space requirements. The balanced profile ensures consistent holding power across varying seabed conditions—sand, mud, and clay—minimizing the risk of dragging during adverse weather. Compliance with international Class Society standards guarantees that each anchor undergoes rigorous tensile testing, ensuring structural integrity under extreme loads. This reliability is non-negotiable for vessel safety, particularly in high-risk scenarios such as storm anchoring or emergency situations where anchor failure could lead to grounding, collision, or environmental damage.

Technical Specifications Overview

Specification	Details
Material	High-tensile casting steel (ASTM A27/A27M Grade 2 or equivalent)
Weight Range	Type SR: 210kg – 20,000kg CB711-95: 100kg – 26,000kg
Grade	U2 (Standard), U3 (High-Tensile)
Surface Finish	Galvanized (Zn-coated), Black Bitumen Paint, Anti-Rust Paint, Customized Options
Class Certifications	ABS, LR, BV, DNV, GL, NK, CCS, RINA, KR, and all major Class Societies
Holding Power	Optimized for diverse seabed conditions; meets Class Society requirements (typically 2.5x–3.5x nominal weight)
Design Features	Stockless, balanced profile for modern anchor pockets; easy stowage and deployment

Trends in Shipbuilding and Repair Market

The global maritime industry is experiencing dual demand drivers: new-build vessels requiring advanced anchoring solutions and an aging fleet necessitating replacement anchors. According to Clarksons Research, over 1,200 new commercial vessels are scheduled for delivery in 2024, with a significant portion requiring high-performance anchors like the Spek series. Simultaneously, the replacement market is growing due to regulatory pressures (e.g., SOLAS Chapter II-1) mandating periodic equipment upgrades. Ship repair yards increasingly prioritize certified, ready-to-install anchors to minimize downtime during dry-docking. Spek anchors’ compatibility with modern anchor pocket designs and compliance with Class Society standards make them a preferred choice for both new builds and retrofits.

Why Source from Hangzhou Star Marine Technology?

As a leading marine equipment exporter, Hangzhou Star Marine Technology delivers cost-effective, certified Spek anchors tailored to global shipbuilding and repair needs. Our manufacturing excellence leverages China’s industrial scale while maintaining stringent quality controls—ensuring compliance with ABS, LR, BV, DNV, and other Class Society requirements. Key advantages include:
Competitive Pricing: Optimized production processes and economies of scale reduce costs without compromising on material quality or certification standards.
Full Certification Compliance: Every anchor includes Class Society Tensile Test Certificates, ensuring regulatory adherence for new builds and repairs.
Customization Flexibility: Options for surface finishes (galvanized, black bitumen, anti-rust), weight ranges (100kg–26,000kg), and grade specifications (U2/U3) to match vessel-specific requirements.
Global Supply Chain Reliability: Streamlined export processes, including documentation, logistics, and technical support, ensuring timely delivery to shipyards and owners worldwide.
Proven Industry Expertise: Decades of experience serving shipowners, shipyards, and repair facilities, with a track record of meeting tight deadlines and technical specifications.

By partnering with Hangzhou Star Marine Technology, clients gain a trusted solution provider that combines cost efficiency, technical precision, and unwavering commitment to maritime safety standards—ensuring operational continuity for both new construction and repair projects.

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Technical Specs & Class Approval

Technical Specifications & Class Approval

Hangzhou Star Marine Technology delivers precision-engineered Spek anchors designed to meet the stringent demands of global maritime operations. Our anchors are rigorously tested and certified to ensure reliability in both new shipbuilding and ship repair projects, offering optimal holding power, structural integrity, and corrosion resistance. Each unit is manufactured to exacting standards with full traceability through Class Society Tensile Test Certificates.

Core Technical Parameters

Grade (U2/U3)
High-strength casting steel grades U2 and U3 are used, engineered for superior tensile strength and fatigue resistance. U2 complies with general marine applications, while U3 provides enhanced performance in high-stress environments (e.g., deep-water anchoring, extreme weather conditions). Both grades exceed ISO 17048 and Class Society requirements for anchor steel.
Weight Range
Standard offerings comply with CB711-95 (100kg–26,000kg) and Type SR (210kg–20,000kg) specifications, covering vessels from small craft to ultra-large tankers. Custom weight configurations are available for specialized vessel requirements.
Holding Power
Engineered to deliver 2.5–3.0× holding power-to-weight ratio per Class Society standards, validated through dynamic load testing in diverse seabed conditions (sand, mud, rock). This ensures secure mooring performance across all operational scenarios.
Surface Treatment
Hot-dip galvanized: 85μm minimum zinc coating for maximum saltwater corrosion resistance (ASTM A123 compliant).
Black bitumen paint: Cost-effective protection for inland/short-term deployments.
Custom coatings: Epoxy, polyurethane, or specialized anti-fouling treatments for extreme environments (e.g., Arctic operations, chemical tankers).

Class Society Approvals

All Spek anchors are certified by leading international Class Societies, including CCS, DNV, BV, ABS, LR, GL, NK, RINA, and KR. Each shipment includes a Class Society Tensile Test Certificate confirming compliance with specified standards, including:
Proof load testing (1.5× working load)
Ultimate tensile strength verification
Material traceability via heat lot numbers
Dimensional conformity to CB711-95 or Type SR specifications

This certification framework ensures seamless integration into vessel class approval workflows, critical for both new construction and dry-dock repairs.

Specification Comparison Table

Specification	Standard Options	Custom Options
Weight Range	CB711-95: 100kg–26,000kg; Type SR: 210kg–20,000kg	Tailored to specific vessel requirements (up to 30,000kg+)
Steel Grade	U2 (Standard), U3 (High-Tensile)	Specialized alloys (e.g., U4, custom heat-treated)
Surface Treatment	Hot-dip galvanized, Black bitumen paint	Epoxy, polyurethane, or client-specified coatings
Class Certificates	CCS, DNV, BV, ABS, LR, GL, NK, RINA, KR	Additional society approvals or specific test protocols

As a trusted partner for global shipyards and owners, Hangzhou Star Marine Technology delivers Spek anchors that combine technical precision with operational reliability. Whether outfitting new vessels or upgrading existing fleets, our solutions ensure compliance, safety, and long-term performance in the most demanding marine environments.

Proven Solution for Shipbuilding & Repair: Our anchors are engineered for rapid installation in dry-dock scenarios and seamless integration into new-build specifications. All units include full documentation for classification society audits, minimizing project delays and ensuring regulatory compliance.

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Shipbuilding & Repair Solutions

Shipbuilding & Repair Solutions

Hangzhou Star Marine Technology Co., Ltd. delivers end-to-end anchoring solutions for new-build vessels and emergency repairs. We go beyond supplying standalone products—our engineering team integrates anchors, windlasses, chains, and hardware into fully compliant systems optimized for operational safety, performance, and regulatory adherence. From initial design to rapid deployment, we ensure seamless compatibility and minimal downtime for shipowners, shipyards, and repair facilities worldwide.

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Technical Specifications

Precision-engineered Spek anchors meeting global marine standards for reliability and holding power.

Specification	Details
Anchor Types	Type SR, CB711-95
Weight Range	SR: 210–20,000 kg; CB711-95: 100–26,000 kg
Material Grade	High-tensile casting steel (U2/U3 compliant with ISO 17048)
Surface Finish	Hot-dip galvanized (ISO 1461), black bitumen paint, epoxy anti-corrosion coating, or custom finishes
Certifications	Tensile test certificates from ABS, LR, BV, DNV, GL, NK, CCS, RINA, KR, and other major classification societies

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Integrated System Design & Outfitting Matching

We engineer complete anchoring systems—not just individual components.
Windlass Compatibility: Our engineers calculate exact windlass capacity requirements based on anchor weight, chain size, and vessel operational profile. For example:
SR-5000 anchor (5,000 kg) paired with windlass rated for ≥12,000 kg pull force and compatible chain diameter (e.g., ASTM A492 Grade 3, 42 mm).
Chain & Fitting Coordination: We specify chain link dimensions, shackle ratings, and swivel assemblies to ensure balanced load distribution and prevent system failure.
Holding Power Validation: All configurations undergo hydrodynamic analysis to match vessel displacement, seabed conditions, and operational depth requirements per Class Society guidelines.

“Our system-level approach eliminates compatibility risks—ensuring anchors, windlasses, and chains work as a unified, certified unit.”

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Emergency Response & Rapid Deployment

24/7 support for critical shipyard repairs and urgent vessel emergencies.
Same-Day Dispatch: Critical spare parts (e.g., anchors ≥5,000 kg) shipped within 24 hours of order confirmation.
On-Site Technical Teams: Certified engineers deployed within 48 hours to assist with anchor replacement, system recalibration, and compliance validation at repair yards.
Expedited Certification: Accelerated Class Society testing for urgent projects (e.g., ABS/BV certification in 72 hours).
Global Logistics Network: Dedicated cold-chain shipping for galvanized components to prevent corrosion during transit.

“When downtime is unacceptable, we prioritize speed without compromising safety or compliance.”

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Global Certification & Compliance Assurance

All products meet stringent international standards with full traceability.
Class Society Approvals: Certificates issued by ABS, LR, BV, DNV, GL, NK, CCS, RINA, and KR for every batch.
Tensile Testing: Each anchor undergoes ISO 17025-accredited tensile testing (minimum 1.5× design load), with results documented in a Certificate of Compliance.
Material Traceability: Heat treatment records and chemical composition reports (per ASTM A27/A27M) provided for all castings.
Custom Compliance: Tailored testing for regional regulations (e.g., China CCS, Russian RS, or Norwegian DNV-GL).

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Why Choose Star Marine?

As a trusted partner for Tier-1 shipyards and global fleet operators, we combine:
✅ Technical Expertise: 15+ years in marine anchoring system design for vessels from 5,000 DWT to ultra-large tankers.
✅ End-to-End Support: From initial concept to post-installation validation—no component left unverified.
✅ Unmatched Responsiveness: 98% on-time delivery rate for urgent orders, backed by ISO 9001-certified quality control.

Contact our engineering team today for a system-specific solution:
📧 [email protected] | 🌐 www.star-marine.com | 📞 +86 571 8822 3355

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Packaging & Logistics

Packaging & Global Logistics for Reliable Delivery

As a premier solution provider for new shipbuilding projects and ship-repair operations, Hangzhou Star Marine Technology ensures every Spek Anchor is packaged and shipped with precision-engineered solutions that meet the highest maritime industry standards. Our logistics framework is designed to deliver critical anchoring equipment on schedule, with robust protection against corrosion and damage during transit, ensuring immediate readiness for installation.

Precision Packaging Standards

To safeguard product integrity across global shipping routes, we implement tiered packaging protocols based on anchor weight and operational requirements. All wooden packaging complies with ISPM 15 regulations to prevent international pest transmission, while steel-based solutions provide structural stability for heavy-duty applications.

Weight Range (kg)	Packaging Method	ISPM 15 Compliance	Protective Measures	Load Capacity
80 – 5,000	Custom Wooden Crate	Yes	VCI paper, HDPE anti-corrosion film, corner protectors	5,000 kg
5,000 – 20,000	Steel Pallet + Reinforced Wooden Frame	Yes	Epoxy-coated steel frame, anti-rust film, shock-absorbing padding	20,000 kg
20,000 – 26,000	Custom Steel Skid	Yes	Heavy-duty strapping, weatherproof tarpaulin, ISO-certified load distribution	26,000 kg

Global Logistics Network

Our export operations are strategically anchored at China’s most efficient maritime gateways:
Ningbo Port: Ranked among the world’s top 5 container ports, offering streamlined customs clearance and direct services to key global hubs (e.g., Rotterdam, Los Angeles, Singapore). Ideal for time-sensitive new-build projects requiring rapid deployment.
Shanghai Port: The largest container terminal globally, with 24/7 operational capacity and extensive shipping lanes. Ensures seamless transit for large-volume orders and critical ship-repair components.

We partner with industry-leading freight forwarders including Maersk, COSCO Shipping, and DHL Global Forwarding to provide:
Real-time shipment tracking via IoT-enabled platforms
Full compliance documentation (Class Society certificates, commercial invoices, export licenses)
Adherence to IMO, ISO, and ISPM 15 standards
Dedicated project coordination for emergency repairs and new-build schedules

This integrated approach guarantees on-time delivery for both new construction and emergency repair scenarios, minimizing vessel downtime and operational disruptions.

Key Compliance Note: All wooden packaging undergoes heat treatment (HT) or fumigation (MB) per ISPM 15, with certification stamps visible on each crate. Steel components are treated with marine-grade anti-corrosion coatings to withstand saltwater exposure during transit.

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Contact Star Marine Technology

Spek Anchor: Precision Engineering for Modern Vessels

Product Overview

The Spek Stockless Anchor, engineered by Hangzhou Star Marine Technology Co., Ltd., is a high-performance anchoring solution designed for modern vessels. Featuring a balanced design optimized for anchor pockets, it ensures reliable holding power in diverse seabed conditions. Available in Type SR and CB711-95 variants, our anchors meet stringent Class Society standards and are manufactured using high-tensile casting steel (Grade U2/U3) for superior durability.

Technical Specifications

Specification	Details
Type	SR (210kg–20,000kg), CB711-95 (100kg–26,000kg)
Material	High-tensile casting steel (Grade U2/U3 per Class Society standards)
Surface Finish	Hot-dip galvanized or epoxy black paint (customizable upon request)
Certifications	ABS, LR, BV, DNV, GL, NK, CCS, RINA, KR, and other major classification societies
Holding Power	Optimized for modern anchor pockets; certified per Class Society tensile tests

Compliance & Certification

All Spek Anchors are certified by major classification societies including ABS, LR, BV, DNV, GL, NK, CCS, RINA, and KR. Each unit undergoes rigorous tensile testing and is supplied with full compliance documentation, ensuring adherence to international maritime safety standards (IMO, SOLAS, and ISO 17025).

Why Hangzhou Star Marine is Your Trusted Partner

Newbuild & Repair Expertise: Specialized in supplying anchors for both new construction projects and ship repair yards, with precise dimensional tolerances and material specifications.
Customizable Solutions: Tailored surface treatments (galvanized or epoxy black paint) and weight ranges to meet specific vessel requirements.
Quality Assurance: Full traceability from raw material to final product, with third-party inspections and Class Society certifications.
Global Logistics: Efficient export processes with ISO-compliant packaging and shipping, ensuring timely delivery worldwide.

Contact Our Product Specialist

For technical specifications, procurement support, or project-specific solutions, contact our dedicated Product Manager:

Kacher YE
Product Manager
Hangzhou Star Marine Technology Co., Ltd.

📞 Tel/WhatsApp: +86-178-16869405
✉️ Email: [email protected]

Your reliable partner for marine equipment solutions in newbuilds and ship-repair projects globally.

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