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28–57mm CB887 Watertight Anchor Releaser for Commercial Ship Emergency Anchor Chain Release System
Product Details:
| Place of Origin: | China |
| Brand Name: | Zhongyuan Marine Equipmen |
| Certification: | CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate |
| Model Number: | Standard or Customized |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1 Unit |
|---|---|
| Price: | Based on quotation |
| Packaging Details: | Export standard pallet or customized packing |
| Delivery Time: | Based on project requirements |
| Payment Terms: | T/T, L/C |
| Supply Ability: | Customized production based on project requirements |
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Detail Information |
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| Technical Standard: | CB*887 | Nominal Chain Diameter: | 28mm, 32mm And 34mm |
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| Materials: | C-Mn Steel, Stainless Steel | Hydraulic Test Pressure: | 0.4Mpa |
| Surface Treatment: | Sandblasting To S2.5 + One Layer Of Epoxy Shop Primer, Galvanized, Polished, Customized Surface Treatment Available. | Classification Certificates: | CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, Etc. |
| Highlight: | CB 887 Cable Clench Anchor Releaser |
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Product Description
28–57mm CB887 Watertight Anchor Releaser for Commercial Ship Emergency Anchor Chain Release System
Product Overview
CB887 Watertight Helix Screw Type Anchor Releaser is a critical marine safety component designed for commercial ship mooring systems, enabling rapid anchor chain release under emergency conditions. The equipment adopts a screw-type locking mechanism combined with a watertight sealing structure, ensuring reliable holding during normal operation and instant release when required. With a verified watertight performance of 0.4 MPa, the releaser is suitable for installation in chain locker or deck areas where sealing integrity is essential. It is widely used on bulk carriers, tankers, and boat to improve vessel safety and emergency response capability.
Quick Specifications
- Standard: CB 887-1977 – Marine anchor releaser
- Chain Diameter: 28–57 mm – Covers common commercial ship sizes
- Chain Grade: Grade 2 / Grade 3 – Compatible with standard anchor chains
- Watertight Pressure: 0.4 MPa – Verified sealing performance
- Material: C-Mn Steel / Stainless Steel – Strength and corrosion resistance
- Thread Type: Trapezoidal screw – Reliable mechanical locking
- Surface Treatment: Sa2.5 + epoxy primer / galvanizing
- Installation Area: Chain locker / deck-mounted system
- Customization: Available
Main Technical Parameters
Chain diameter mm | H | h | b | L | B | δ | D | d | l | Weight kg |
| 28 | 170 | 65 | 60 | 500 | 200 | 10 | Tr 24×5 | 18 | 45 | 22.73 |
| 31 | 180 | 70 | 70 | 510 | 210 | 10 | Tr 26×5 | 27.74 | ||
| 34 | 180 | 70 | 70 | 510 | 210 | 10 | 28.1 | |||
| 43 | 200 | 75 | 80 | 550 | 250 | 12 | 48.67 | |||
| 49 | 220 | 80 | 80 | 560 | 260 | 14 | Tr 32×6 | 63.63 | ||
| 53 | 235 | 90 | 90 | 575 | 275 | 14 | 79.47 | |||
| 57 | 235 | 90 | 90 | 575 | 275 | 14 | 79.47 |
Note: Dimensions in parentheses are reference values. Final design depends on project requirements.
Selection Guide
Step 1: Confirm chain diameter (28–57 mm) – determines model size
Step 2: Confirm chain grade (G2 / G3) – ensures compatibility
Step 3: Verify watertight requirement (0.4 MPa) – installation condition
Step 4: Select material (carbon steel / stainless steel) – corrosion level
Step 5: Confirm classification society – project requirement
Step 6: Confirm installation position (deck / chain locker) – structure design
Structure
Main Body: Welded steel housing with high structural strength
Helix Screw Mechanism: Provides secure locking and controlled release
Watertight Sealing System: Ensures pressure resistance up to 0.4 MPa
Chain Holding Device: Maintains anchor chain under normal load
Release Mechanism: Allows fast disengagement in emergency
Custom Attributes
Chain Diameter: 28–57 mm – based on vessel specification
Chain Grade: G2 / G3 – load requirement
Material: Carbon Steel / Stainless Steel – corrosion environment
Coating: Epoxy / Galvanized / Custom system
Certification: CCS / ABS / DNV / LR / BV etc.
Installation Type: Deck-mounted / chain locker
Design Pressure: 0.4 MPa watertight
Inquiry Guide
Please provide:
• Anchor chain diameter and grade
• Vessel type (bulk carrier / tanker)
• Required classification society
• Quantity
• Delivery port and Incoterms (FOB / CIF)
• Special requirements (material / coating / pressure)
How It Works
The anchor chain is secured inside the releaser through a helix screw locking mechanism. Under normal conditions, the screw maintains a tight mechanical connection, ensuring safe anchor holding. In emergency situations, the operator activates the release system, disengaging the screw and allowing the anchor chain to drop instantly, enabling rapid vessel response.
Installation Type
CB887 Watertight Anchor Releaser supports two standard installation configurations to meet different vessel structure requirements:
1. Vertical Bulkhead Installation
- Installed on vertical bulkhead inside chain locker
- Suitable for enclosed spaces requiring watertight integrity
- Easy access for operation and maintenance
- Preferred for vessels with limited deck space
2. Deck Underside Installation
- Installed under deck structure
- Saves internal space and simplifies layout
- Suitable for deck-mounted anchor systems
- Requires proper sealing design to maintain watertight performance
Installation type must be confirmed before quotation, as it affects structure design and sealing configuration.
Applications
Commercial ships, bulk carriers, oil tankers, offshore support vessels, emergency mooring systems
Certifications & Advantages
Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.
Watertight design (0.4 MPa verified); Reliable emergency release performance; Strong compatibility with standard anchor chains; Robust structure for marine environment; Customizable configuration
Drawing & Photos
General arrangement drawing and product photos
Ordering
Specify model, chain diameter, material, certification, quantity, and delivery terms
FAQ
Q1: Can this anchor releaser meet class requirements? A: Yes, it can be supplied with CCS, ABS, DNV, LR and other class certifications.
Q2: Is the watertight performance tested? A: Yes, the unit is tested to withstand 0.4 MPa water pressure.
Q3: What is the difference between watertight and non-watertight versions? A: Watertight type includes sealing structure and pressure resistance, suitable for enclosed or underwater environments.
Q4: Can it be customized for specific projects? A: Yes, dimensions, materials, coating systems and certifications can be customized.