Product Description:

Material Advantages:

Stable pulling force: On regular seabeds (sand, mud), the pulling force performance is reliable, meeting the daily anchoring needs of merchant ships, with high cost-effectiveness.
Easy operation: The absence of cross-bar design simplifies the retraction, storage and reassembly process, reducing the operational intensity of crew members and improving work efficiency.
Low maintenance cost: The cast steel structure is sturdy and durable, with adequate surface protection treatment. Daily maintenance only requires regular inspection of accessories and surface coatings, making the maintenance simple.

Manufacturing Process:

The production of Anchor (Speck Anchor) mainly relies on casting or forging, following standards such as CB/T 711-1995. The core process includes raw material preparation, forming, heat treatment, finishing, surface treatment, assembly and testing, and finally, the product is labeled and stored. The detailed steps are as follows:
1. Raw material preparation and component control
Selection: Select ZG200-400C, Q235, etc. for shipbuilding cast steel or forged steel, which must meet the requirements of classification societies (ABS, LR, DNV, etc.).
Raw material inspection: Spectral analysis, mechanical property testing to ensure the content of C, Si, Mn, S, P, etc. meets the standards, and eliminate harmful impurities.
Mixing and melting: Melting in an electric arc furnace / medium frequency furnace, controlling the temperature and uniformity of the composition, taking samples for analysis before casting.
2. Forming process (either casting or forging)
(1) Casting process (mainstream, suitable for large specifications)
Mold making: Make sand molds / resin sand molds according to CB/T 711-1995 dimensions, leaving a reserved shrinkage amount and pouring system.
Pouring: Steel liquid temperature 1550–1650℃, rapid and stable pouring, avoiding gas pores and shrinkage cavities.
Cooling and fall-sand: Natural cooling to room temperature, vibration fall-sand, cleaning of risers and burrs.
Castpiece cleaning: Sand blasting / shot blasting to remove adhered sand, magnetic powder / ultrasonic flaw detection to check internal defects.
(2) Forging process (suitable for high-strength requirements)
Cutting: Cut steel billets according to the weight and forging ratio of the anchor.
Heating: 1100–1250℃ austenitization to ensure plasticity.
Forging formation: Free forging / die forging, controlling the forging ratio ≥ 3, ensuring continuous metal flow lines, forming key parts such as anchor claws and anchor shafts in one go.
Post-forging cooling: Heap cooling / furnace cooling to prevent cracks.
3. Heat treatment (core for performance determination)
Normalizing: 880–920℃ holding, air cooling, refining grains, uniformizing the structure.
Quenching (optional): Quenching + high-temperature tempering to increase strength and toughness, suitable for high-strength anchors.
Tempering: 550–650℃ holding, eliminating internal stress, stabilizing dimensions, ensuring hardness HB 180–240.
Performance testing: Tensile, impact, hardness tests, in accordance with CB/T 711-1995 and classification society requirements.
4. Finishing and size control
Mechanical processing: CNC turning / milling / drilling for anchor crown, pin shaft holes, threads, etc., ensuring tolerance ±1–±3mm, surface roughness Ra ≤ 12.5μm.
Critical dimension inspection: Three-coordinate measurement for anchor claw spacing, anchor shaft length, pin shaft hole coaxiality, etc., in accordance with the drawings.
De-burring and chamfering: Avoid stress concentration, improving assembly performance.
5. Surface treatment (anti-corrosion)
Sandblasting / shot blasting: Remove rust thoroughly, surface roughness Ra 40–80μm, enhancing coating adhesion.
Anti-corrosion coating:
Hot-dip galvanizing: Zinc layer thickness ≥ 85μm, in accordance with GB/T 13912, with long anti-corrosion life.
Rich zinc primer + epoxy intermediate paint + polyurethane topcoat: Suitable for harsh marine environments, coating thickness ≥ 200μm.
Coating inspection: Thickness gauge, adhesion scratch test, ensuring coating quality.
6. Assembly and testing (safety verification)
(1) Assembly
Anchor claws and anchor shaft pin joints to ensure flexible rotation, no jamming.
Install anchor release hooks, pin shafts, and fit opening pins for anti-loosening.
7. Labeling, packaging and storage
Labeling: Stamp the anchor crown with a steel mark, including model, weight, batch number, classification society certification mark (such as ABS, LR).
Packaging: Rust-proof paper + woven bag / wooden box to avoid transportation damage.
Storage: Attach quality certificate, test report, classified and stored according to specifications.

Features:

The Spek Anchor (Spake Anchor) is an improved version of the Hall Anchor, focusing on five key advantages: efficient anchoring, user-friendly operation, safety protection, reliable structure, and compliance compatibility. It is suitable for merchant ships, engineering vessels, and various large ships, and is a mature marine anchor type recognized by global classification societies.
1. Structural and Anchoring Strength Advantages (Core Competitiveness)
Improved center of gravity and anchor crown design: The anchor head's center of gravity is lower than the rotation axis, and the anchor crown is equipped with strengthened ribs and anchor crown plates. The anchor claws turn and enter the soil as soon as they touch the bottom, and the two claws are buried simultaneously, with a gripping ratio of 3–5 (superior to traditional Hall anchors), providing strong adaptability to various soil types such as sand, mud, and gravel.
Quick soil penetration and resistance to wind waves: The anchor claws are sharp and have an optimized angle, with low sinking resistance and deep soil penetration. The tension is evenly distributed to the anchor body and the seabed contact area, making it less likely to loosen or shift in strong winds and waves.
Structural strength redundancy: Cast / forged (non-welded) one-piece structure, key parts with strengthened ribs design, subjected to normalizing / quenching heat treatment, with balanced tensile strength and toughness, outstanding fatigue and impact resistance.
2. Operation and Safety Advantages (Use Value)
Easy deployment and retrieval, compatible with anchor chain tubes: When retrieving the anchor, the anchor claws naturally flip upward and enter the anchor chain tube vertically, without the need for additional adjustment, increasing operational efficiency by 30%+.
Zero damage to the hull: The anchor claws flip over upon touching the shell plate, avoiding hull scratches, and reducing maintenance costs and navigation risks.
No crossbar design (Stockless): Compact storage volume, compatible with anchor holes / anchor chain tubes, saving deck space, suitable for forward anchor placement on large ships.
Low operational intensity: No need for manual assistance for positioning during throwing and retrieving, can be completed by a single person, reducing crew labor and operational risks.
3. Durability and Full Lifecycle Advantages (Cost Value)
High-quality raw materials and processes: Ship-certified cast steel / forged steel (such as ZG200-400C), strict control of components through spectral analysis + mechanical testing to eliminate defects such as pores and shrinkage cavities.
Long-lasting corrosion protection: Hot-dip galvanizing (≥85μm) or heavy-duty coating (≥200μm), with a lifespan of 15–20 years in saltwater environments, reducing replacement frequency.
Low maintenance costs: One-piece molding reduces the risk of weld cracking, heat treatment eliminates internal stress, minimal deformation over long-term use, long maintenance intervals, and low costs.
4. Compliance and Compatibility Advantages (Market Adaptability)
Global classification society certification: ABS, LR, DNV, CCS, BV, etc., covering all major ship classification societies, meeting SOLAS and CB/T 711-1995 standards, suitable for international shipping vessels.
Full specification compatibility: From dozens of kilograms to tens of tons, compatible with bulk carriers, container ships, oil tankers, engineering ships, etc., with strong versatility.
Supply chain and delivery guarantee: Mature production process, quick response to orders, complete quality certificates and test reports, ensuring compliance without worries.

Technical Parameters:

Applications:

Commercial shipping: The bow anchors or backup anchors of mainstream commercial ships such as bulk carriers, container ships, and oil tankers, suitable for both ocean and coastal routes, taking into account both pulling power and operational efficiency.
Cruise ships and luxury yachts: Models like Type SR feature a low center of gravity and damage prevention design, suitable for the anchoring needs of large cruise ships and yachts, ensuring the safety of passengers and the integrity of the ship.
Engineering vessels: Positioning anchors for dredgers, cranes, platform supply ships, etc., for operations, capable of withstanding frequent anchoring and complex seabeds, providing stable positioning capabilities.
Fishing and small vessels: Main anchors for small fishing boats and work boats, with a compact design for easy storage, suitable for nearshore and coastal operations.
Marine facilities: Permanent mooring anchors for buoys, lighthouse ships, offshore wind power platforms, etc., resistant to long-term seawater corrosion, ensuring the stability of facilities.

Selection Suggestions
Match the anchor weight with the ship's deadweight tonnage and the anchor chain specification, following the classification society's norms.
For sandy/mud-bottomed sea beds, Type 95 is preferred; for complex sea conditions or large ships, Type SR is recommended.
The anchor chain for the matching system must undergo tension testing to ensure it matches the strength of the anchor claws, thereby enhancing the reliability of the overall anchoring system.

Support and Services:

After-sales consultation: We provide 24/7 customer service to answer customer questions , such as specification selection, usage methods, and maintenance points.

Backed by decades of marine hardware manufacturing expertise, our anchors comply with international marine standards and undergo rigorous quality testing—including load-bearing tests, corrosion resistance tests, and seabed simulation trials—to ensure reliability. We offer customization services for size, material, and surface treatment to meet the unique requirements of different vessels and marine projects.
Trust our  Marine Anchor to secure your vessel with uncompromising strength and stability, even in the most challenging marine conditions.

With class-certified quality, robust construction, and reliable performance, our Spek anchor is a trusted choice for shipowners and operators worldwide. It not only meets the strictest safety standards but also delivers cost-effective, long-term mooring solutions for diverse marine applications.
We can customize anchor specifications according to your vessel’s unique requirements. Contact us today for detailed technical drawings and quotation!
Any question please let us know ,our JinCheng maritime will provide you the best service with 7*24 hours ~