Stud link anchor chains are a type of heavy-duty chain commonly used for anchoring and mooring vessels. They have a central stud in each link that helps to prevent kinking, deformation, and fouling. These chains are known for their strength and are often preferred for large vessels and applications where significant loads are involved.
Fishing chains have three specifications: short link chian, middle link chain and long link chain. Different types of fishing chains have different features.
Studless Fishing Anchor Chain are 62.5% load verified at break, very durable and able to withstand extreme and harsh weather use, it is also corrosion-resistant, ideal for use in saltwater environments. There are Short Link, Mid Link and Long Link to choose from.
Stud link anchor chains are a type of heavy-duty chain commonly used for anchoring and mooring vessels. They have a central stud in each link that helps to prevent kinking, deformation, and fouling. These chains are known for their strength and are often preferred for large vessels and applications where significant loads are involved.
The dual shank anchor features two parallel shanks that work together to embed and hold in various seabed conditions. This design provides higher holding power than traditional anchors, especially in soft ground and mud, and is commonly used in aquaculture and swing moorings.
A Sand Anchor has is a conventional anchor with solid construction to withstand high load.It has high holding power and weight ratio and very suitable for seabed of sand and mix Soil.
Mooring connection plates are manufactured using alloy grade material and followed by full heat treatment process.The durability ensures that the plates can withstand exposure to saltwater, reducing maintenance needs and extending the lifespan of the aquaculture setup.
Rope K3 Thimble is used for aquaculture mooring, where the surface needs to be heat-treated to protect wire, fibre or synthetic ropes.
The 12.5mm Stud Link Anchor Chain is a heavy-duty marine chain primarily used in ship anchoring and mooring systems. Standard length (short link): typically supplied in 27.5-meter (15 fathom) lengths, connectable using Kenter shackles.
AM3 is a designation for a grade of stud-link anchor chain, specifically referring to a high-strength steel chain used for ship anchoring and mooring. These chains are designed for durability and reliability in demanding marine applications, often used on large vessels or in harsh environmental conditions.
Stud link anchor chain AM2 is a specific type of anchor chain widely used in marine applications. It's characterized by having a stud (a crossbar or bar) within each link, adding strength and preventing kinking or twisting. AM2 is a designation within the marine industry for a specific grade of this chain, indicating its strength and material properties.
Anchor Chain for marine farm mooring system, with diameter 16mm to 50mm, most used in European fish farming industry.
| Product Information: | |
| Application: | Forelock Shackle is One Type of Mooring Straight Shackles. |
| Material: | Alloy Steel CM490/CM690 |
| Holding Power: | At Least 40 Times the Self Weight |
| Specification: | 12.5MM to 50MM |
| Surface: | Hot Dip Galvanizing，Primary Color,Black Tar |
| Certification: | LR, ABS, BV, DNV, CCS, KR, NK, RMRS,etc |
A forelock mooring shackle is a specialized type of shackle, commonly used in marine applications, particularly for connecting anchor chains or mooring lines. It's characterized by a unique locking mechanism, a forelock, that secures the shackle's pin, preventing accidental disconnections. This design is crucial in environments where frequent maintenance or inspection is difficult or impractical.
SMEOCEAN offers Grade 2 ,Grade 3 and 304,316 stainless steel, with sizes ranging from 12.5mm to 52mm. Cotter pins are available in 304 and 316 stainless steel. Technical inquiries are welcome.
| Nominal Dia. | D | d | d1 | S | E | W | Proof Load | Break Load | Weight |
| Anchor Chain (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (mm) | (KN) | (KN) | (kg) |
| 12.5 | 18 | 66 | 92 | 1.1 | |||||
| 14 | 20 | 82 | 116 | 1.4 | |||||
| 16 | 22 | 107 | 150 | 1.65 | |||||
| 17.5 | 24 | 127 | 179 | 2.2 | |||||
| 19 | 26 | 34 | 26 | 100 | 62 | 50 | 150 | 211 | 2.9 |
| 20.5 | 29 | 36 | 28 | 102 | 65 | 51 | 175 | 244 | 3.5 |
| 22 | 31 | 39 | 31 | 104 | 68 | 53 | 200 | 280 | 4.3 |
| 24 | 34 | 43 | 34 | 114 | 74 | 57 | 237 | 332 | 5.5 |
| 26 | 37 | 46 | 37 | 123 | 81 | 61 | 278 | 389 | 7.2 |
| 28 | 39 | 51 | 39 | 132 | 87 | 68 | 321 | 449 | 8.8 |
| 30 | 42 | 54 | 42 | 142 | 93 | 72 | 368 | 514 | 10.9 |
| 32 | 45 | 57 | 45 | 151 | 99 | 76 | 417 | 583 | 12.3 |
| 34 | 48 | 62 | 48 | 160 | 105 | 80 | 468 | 655 | 15 |
| 36 | 50 | 65 | 50 | 170 | 112 | 87 | 523 | 732 | 18 |
| 38 | 53 | 69 | 53 | 180 | 118 | 92 | 581 | 812 | 21.2 |
| 40 | 56 | 72 | 56 | 189 | 124 | 96 | 640 | 895 | 24.6 |
| 42 | 59 | 76 | 59 | 251 | 130 | 100 | 703 | 981 | 28.8 |
| 44 | 62 | 769 | 1080 | 33.5 | |||||
| 46 | 64 | 83 | 64 | 276 | 143 | 111 | 837 | 1170 | 37 |
| 48 | 908 | 1270 | 43.6 | ||||||
| 50 | 981 | 1370 | 48 | ||||||
| 52 | 1060 | 1480 | 52.8 |
1. What is a forelock shackle?
A mooring shackle with a pin secured by a metal clip (forelock), designed for permanent or long-term installations where vibration could loosen other types.
2. How to choose the right one?
Match it to your chain diameter and grade. Standard forelock shackles fit chain sizes from 22mm to 50mm. For U2 chain, use Grade 2 (490 MPa); for U3 chain, use Grade 3 (690 MPa). The shackle grade must never be lower than the chain grade.
3. What’s the size limit?
50mm is the practical upper limit. For chains over 50mm, use an LTM End Joining Shackle instead, which is designed for smooth passage through chain stoppers.
4. Elliptical shaft or round shaft?
Both meet the same strength. Elliptical shaft (~1.2x heavier) offers better underwater stability – recommended for permanent submerged moorings. Round shaft is lighter and easier to handle – suitable for temporary connections.
5. How is it secured?
Insert the pin, then bend the metal clip through the hole in the pin to lock it. This simple but effective design prevents accidental loosening.
Need a forelock shackle? Contact us with your chain size and grade. Mill test certificates included. Class certificates available on request.
