Cast Steel Bar Type Anchor Chain Stopper for Small Vessels Anchoring| CB* 286-84

Product Overview

The CB* 286-84 cast steel bar type anchor chain stopper is a lever-operated securing device installed by welding on a forecastle deck foundation or other approved anchor-chain foundation. The cast steel body and operating bar are arranged in the anchor chain lead so the bar can engage the chain path and restrain chain movement when the vessel is underway or when the anchor chain needs to be mechanically secured.

This size series covers 12.5 to 68 mm anchor chain and is particularly suitable for small boats, inland waterway vessels, barges, small tugboats, workboats, and harbor craft using a compact anchoring arrangement. We can also coordinate the anchor windlass, chain guide roller, chain stopper, chain centerline, and foundation interfaces as one anchoring equipment package. CB* 286-84 is a legacy standard; for newbuilding projects, the required standard should be confirmed because CB/T 4462-2016 replaced CB* 286-1984.

Quick Specifications

• Product type: Cast steel bar type anchor chain stopper with lever operation → provides a mechanical securing point in the anchor chain line.
• Standard reference: CB* 286-84 / CB 286-1984 → retained for owner-specified, replacement, repair, and legacy vessel drawing applications.
• Updated standard check: CB/T 4462-2016 replaced CB* 286-1984 → confirm the required standard and approved drawing for newbuilding projects.
• Anchor chain diameter: 12.5 to 68 mm → select the stopper directly from the vessel's chain diameter and verified link dimensions.
• Installation: Welded to a deck foundation or forecastle structure → chain centerline, foundation strength, weld detail, and deck reinforcement require project confirmation.
• Operating arrangement: Lever-operated bar with optional counterbalance for larger sizes → improves handling where the bar mass becomes higher, subject to confirmed drawing.
• Typical vessel focus: Small boats, inland waterway vessels, barges, small tugboats, workboats, and harbor craft.
• Integrated package option: Anchor windlass + chain guide roller + chain stopper → coordinated chain lead, interface dimensions, and installation data can be prepared for one anchoring arrangement.

Main Technical Parameters

Selection & Inquiry Guide

Step 1: Confirm whether the order follows CB* 286-84 for replacement / legacy drawing compatibility or CB/T 4462-2016 for a new standard-based project.

Step 2: Confirm anchor chain diameter, chain grade, link pitch and width, and the anchor chain standard or maker's chain drawing. Nominal chain diameter alone may not fully define the engagement geometry.

Step 3: Provide the anchoring arrangement or GA drawing showing the hawse pipe / chain guide roller, stopper, windlass chain wheel, chain centerline height, lead direction, and available installation space.

Step 4: Confirm the cast steel body grade, material requirements for the operating bar, shaft and optional counterbalance, plus the required surface treatment and final vessel coating system.

Step 5: Confirm foundation plate, deck reinforcement, welding detail, WPS requirement, inspection scope, material traceability, and classification society requirement before production.

Step 6: Provide quantity, required delivery time, delivery destination, vessel type, newbuilding or replacement status, and reference photos or an existing stopper drawing when available.

Structure

Cast steel body | Lever-operated bar / blade | Pivot shaft | Anchor-chain seating and engagement area | Optional counterbalance | Deck-welded foundation interface | Project-specified coating

Anchoring Arrangement, Casting & Installation Advantages

• The dimensional series covers small chain diameters from 12.5 mm through larger 68 mm chain, allowing the same basic stopper concept to be used across small boats, inland vessels, barges, and small tug anchoring arrangements.
• The cast steel body provides an integrated chain-support and operating structure; casting quality, dimensional accuracy, pivot alignment, and the chain-contact area should be checked before coating.
• The lever-operated bar gives the crew a direct mechanical operating method and a clear visual indication of whether the chain path is open or secured.
• An optional counterbalance can be considered for larger and heavier bar arrangements to reduce manual handling effort, but the counterweight geometry and operating clearance must follow the approved drawing.
• Coordinating the windlass, chain guide roller, stopper, and chain centerline as one package helps reduce interface mismatch, side loading, poor chain lead, and installation rework.
• The welded foundation transfers stopper reaction into the supporting deck structure; foundation scantlings, deck reinforcement, welding sequence, and inspection remain subject to the shipyard or vessel designer's approval.
• Holding load, proof test, and acceptance requirements should be defined by the applicable standard, class rules, and approved project documents rather than inferred from chain diameter or body weight.

Custom Attributes

• Standard: CB* 286-84 / CB 286-1984 → legacy cast steel bar type chain stopper standard; confirm CB/T 4462-2016 for newbuilding use.
• Chain Diameter Range: 12.5-68 mm → select from the vessel anchor chain diameter and verify actual link dimensions.
• Main Body: Cast steel → exact grade, heat treatment condition, material certificate, and NDT scope are to be confirmed.
• Operation: Lever-operated bar → opens for chain movement and closes to engage the chain path.
• Counterbalance: Optional for larger sizes → subject to operating clearance, approved drawing, and customer requirement.
• Installation: Deck / foundation welded → foundation structure, weld foot, WPS, deck reinforcement, and chain centerline require drawing confirmation.
• Surface Treatment: Sa 2.5 blast cleaning + one coat epoxy shop primer as reference → final coating, galvanizing, or other finish follows project specification and technical suitability.
• Package Supply: Anchor windlass + chain guide roller + chain stopper → interface coordination available according to vessel GA and chain arrangement.

How It Works

Anchor chain runs from the hawse / guide arrangement toward the windlass → Bar is raised for paying out or heaving the chain → Chain is positioned at the required securing point → Lever-operated bar is lowered to engage and restrain the chain path → Final securing and operating checks follow the vessel's approved procedure

Applications

Small boats | Inland waterway vessels | Barges | Small tugboats | Workboats | Harbor craft | Compact forecastle anchoring systems | Newbuilding, replacement, and retrofit projects

Certifications & Advantages

Certificates and inspection can be arranged according to project requirement, material traceability, approved drawing, and classification society procedure. Certificate scope must be confirmed before quotation and is subject to class approval.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.

Drawing & Photos

FAQ

Q1: Is CB* 286-84 still the standard to use for a new vessel?

A1: CB* 286-84 remains relevant for replacement, repair, and vessels whose approved drawing specifies the legacy design. CB/T 4462-2016 replaced CB* 286-1984, so a newbuilding project should confirm the required standard with the shipyard, designer, owner, and classification society.

Q2: What should be checked when the stopper is supplied together with a windlass and chain guide roller?

A2: Confirm the complete chain route, chain centerline height, lead direction, chain wheel compatibility, stopper position, operating clearance, foundation interfaces, deck reinforcement, and access for crew operation and maintenance.

Q3: Does the supplied dimension table define the stopper holding load or test load?

A3: No. The supplied table provides chain diameter, B, H, L, weld foot f, and body weight. Holding load, proof test, acceptance criteria, and certificate scope must be confirmed from the applicable standard, class requirement, and approved project documents.