JIS F 2017-1982 Type AC Deck Mounted Casting Steel Panama Chocks Ship Mooring

Product Specification

Deck Mounted Cast Steel Panama Chock JIS F 2017 Type AC

Product Overview

The JIS F 2017-1982 Type AC Panama chock is a deck mounted cast steel mooring chock used to guide mooring ropes and transfer mooring loads into the reinforced deck structure through its cast steel body and welded connection. Type AC is different from the Type AP fabricated deck-mounted version and from the Type BC / BP bulwark-mounted versions. This page focuses on the Type AC cast steel deck-mounted structure only.

For procurement and engineering review, the Type AC chock should be selected by nominal size, deck installation position, rope arrangement, material, surface treatment and required inspection documentation. The smooth cast rope-contact surface is important for reducing rope abrasion, while casting quality, weld-zone condition and deck reinforcement should be confirmed according to the project drawing and class requirement.

Quick Specifications

• Standard: JIS F 2017-1982 — standardized Panama chock structure for ship mooring equipment.
• Type: AC — deck mounted, cast steel Panama chock.
• Nominal size: 310 / 360 / 400 / 450 / 500 — five standard sizes for project selection.
• Reference SWL range: 30–100T — to be confirmed by project drawing, ship structure and class approval scope.
• Material options: casting C-Mn steel, casting stainless steel and special steel for low-temperature or ice-class projects, subject to standard and project requirement.
• Weight range: 253–395 kg according to the JIS F 2017 Type AC standard table — useful for quotation, handling and freight estimation.
• Surface treatment: sandblasting to Sa2.5 with epoxy shop primer, polished stainless steel or customized marine coating system according to order requirement.
• Installation: deck mounted and welded to reinforced deck structure — deck foundation and welding details should be confirmed by shipyard or designer.

Main Technical Parameters

Selection & Inquiry Guide

Step 1: Confirm standard and type — JIS F 2017-1982 Type AC, deck mounted and cast steel.

Step 2: Confirm nominal size — 310 / 360 / 400 / 450 / 500, or send the shipyard drawing for size matching.

Step 3: Confirm load basis — project SWL / design load, mooring arrangement and deck reinforcement requirement.

Step 4: Confirm material and casting requirement — C-Mn cast steel, stainless steel or special steel for low-temperature / ice-class project, subject to standard and project requirement.

Step 5: Confirm surface treatment — Sa2.5 blasting, epoxy shop primer, marine coating system, polished stainless steel or project coating specification.

Step 6: Confirm certificate, quantity, delivery destination, required delivery time and whether installation drawing or existing product photo is available.

Structure

Cast steel body | Smooth rope-contact opening | Deck mounted base | Welded connection area | Reinforced deck foundation | Marine coating system

Casting, Welding & Engineering Advantages

• Type AC uses a cast steel body, which is different from the fabricated steel-plate Type AP structure.
• The rope-contact surface should be smooth and properly finished to help reduce abrasion during mooring operation.
• Wood pattern and lost foam casting processes can be used according to foundry capability and project requirement.
• Casting defects that may affect welding quality should be controlled, especially within 50 mm of the welding area between the chock body and ship structure.
• Deck reinforcement, welding details and load direction should be reviewed according to the approved project drawing.
• Finite element strength calculation and structural optimization can be arranged when the project requires additional engineering verification.
• Surface preparation and marine coating can be adjusted according to vessel environment, coating specification and class requirement.

Custom Attributes

• Product Type: Type AC Panama Chock — deck mounted cast steel mooring chock.
• Standard: JIS F 2017-1982 — suitable when the project specifies Japanese standard Panama chocks.
• Installation: Deck mounted and welded to ship structure — intended for mooring rope passage and load transfer through the deck foundation.
• Construction: Cast steel body — different from fabricated Type AP structure.
• Rope Contact Surface: Smooth rounded opening — helps protect mooring rope during guiding and load transfer.
• Engineering Check: FEA strength review available when required — final scope according to project and class requirement.
• Inspection: Visual, dimensional and documentation checks — final inspection scope according to order and certificate requirement.

How It Works

Mooring rope approaches the deck chock → the smooth cast opening guides the rope → mooring load is transferred through the cast steel body → load is carried into the reinforced deck structure through the approved welded connection.

Applications

Cargo vessels | Tankers | Bulk carriers | Workboats | Barges | Shipbuilding projects | Ship repair and replacement | Deck mooring stations

Certifications & Advantages

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

Classification certificate, material certificate, inspection record, coating documents and engineering calculation can be supplied according to project requirement and subject to class approval scope.

Drawing & Photos

FAQ

Q1: What is the difference between JIS F 2017 Type AC and Type AP Panama chock?

Type AC is a cast steel deck mounted Panama chock, while Type AP is a fabricated steel-plate deck mounted version. They should not be mixed when the project specifies a certain standard type.

Q2: Can Type AC be supplied with stainless steel or low-temperature steel?

Stainless steel and special steel for low-temperature or ice-class projects can be considered, subject to standard applicability, project specification and confirmation before order.

Q3: What information is needed for quotation?

Please provide standard and type, nominal size, quantity, material, surface treatment, certificate requirement, delivery destination, required delivery time, and any installation drawing or existing product photo if available.