Deck Mounted Steel Plate Fabricated Panama Chock | JIS F 2017 Type AP for Ship Mooring

Deck Mounted Steel Plate Fabricated Panama Chock | JIS F 2017 Type AP for Ship Mooring

Product Overview

The JIS F 2017 Type AP deck mounted Panama chock is a steel plate fabricated mooring rope guide used on ship decks where the mooring line needs a defined closed passage and smooth rope-contact surface. It is welded to the deck structure and is normally selected together with the vessel mooring arrangement, rope lead angle, deck reinforcement, coating system, and inspection requirement.

The JIS F 2017 Type AP is a deck-mounted steel plate fabricated Panama chock available in two nominal sizes, 310 and 360, for ship mooring deck arrangements. Compared with cast configurations, the steel plate fabricated type focuses on controlled forming, fixture-supported fabrication, welded connection quality, and geometry repeatability. Final material grade, welding procedure, deck reinforcement, and certificate scope should be confirmed according to the project specification.

Quick Specifications

• Product type: Deck mounted steel plate fabricated Panama chock → closed deck rope passage for ship mooring arrangements.

• Standard and type: JIS F 2017-1982 Type AP → reference for Type AP designation, main dimensions, and nominal size selection.

• Nominal size range: 310 and 360 only → suitable when the vessel drawing specifies the AP steel plate fabricated deck-mounted arrangement.

• Main dimensions provided: L, L1, L2, L3, and L4 → key dimensions for webpage drawing, deck layout checking, and quotation confirmation.

• Calculated weight: 190 kg and 207 kg → useful for handling, packing, lifting arrangement during installation, and freight estimate.

• Installation form: Deck welded structure → deck reinforcement, weld detail, and rope lead angle should be checked before production.

• Manufacturing focus: steel plate forming, fabrication mold / jig control, smooth rope-contact surface, welded assembly accuracy, and optional FEA review.

• Surface treatment: Sa 2.5 blasting + one layer epoxy shop primer as reference → final coating or polished stainless steel surface can be discussed when specified.

Main Technical Parameters

Main webpage dimensions for JIS F 2017 Type AP deck mounted steel plate fabricated Panama chock. Dimensions are in mm unless otherwise stated.

Selection & Inquiry Guide

Step 1: Confirm JIS F 2017 Type AP deck mounted steel plate fabricated Panama chock and nominal size 310 or 360 according to vessel drawing.

Step 2: Confirm mooring line direction, deck arrangement, and whether the chock is used for newbuilding or replacement.

Step 3: Confirm deck welding interface, deck reinforcement, available installation space, and any shipyard installation requirements.

Step 4: Confirm material requirement: steel plate grade, stainless steel option, or special steel requirement if applicable.

Step 5: Confirm surface treatment: shop primer, final coating requirement, galvanized / painted finish, or polished stainless steel surface when specified.

Step 6: Confirm certificate scope before quotation: maker certificate, material certificate, class certificate, witness inspection, or other project requirement.

Step 7: Provide quantity, delivery destination, required delivery time, installation drawing, and reference photos if available.

Structure

Steel plate fabricated body | Closed Panama rope opening | Smooth rope-contact surface | Deck welded base | Forming mold / jig-controlled geometry | Welded assembly interface | Shop primer or specified surface treatment

Fabrication, Welding & Engineering Advantages

• Steel plate fabricated construction is suitable for controlled forming and welded assembly where the vessel drawing specifies JIS F 2017 Type AP instead of a cast type.

• Fabrication mold and jig control help maintain the opening form, base length, and repeated dimensional consistency for the two AP nominal sizes.

• Rope-contact surfaces should be dressed, ground, and smoothed after fabrication to reduce sharp local contact and help protect mooring ropes.

• The deck welded base allows the chock to transfer local rope-contact force into the deck structure; deck reinforcement and weld detail should be checked by the shipyard or design office.

• Welding preparation around the deck connection area should be controlled to reduce defects that may affect shipyard welding and inspection acceptance.

• FEA-based strength calculation and optimization can be used when required to review stress distribution around the opening, plate transitions, and welded base area.

• The two-size range simplifies selection for projects where the vessel drawing has already fixed the AP type and main deck layout.

Custom Attributes

• Standard: JIS F 2017-1982 → use when the shipyard or owner specification calls for JIS Type AP Panama chock dimensions.

• Type: AP → deck mounted steel plate fabricated configuration for Panama chock applications.

• Nominal Size: 310 / 360 → select according to vessel mooring layout and project drawing.

• Construction: Steel plate fabricated body → forming mold / jig control and welded assembly quality are key production points.

• Material: Steel plate grade to be confirmed → C-Mn steel, stainless steel, or special steel requirement should be confirmed before quotation.

• Installation: Deck welded → deck reinforcement, weld detail, and local installation condition should be confirmed by drawing.

• Surface Treatment: Sa 2.5 blasting + epoxy shop primer as reference → final coating follows vessel painting specification or customer requirement.

• FEA Review: Available according to project requirement → used to check stress concentration and optimize local geometry when required.

• Certificate Requirement: Available according to order scope → class inspection and certificate level should be confirmed before quotation.

How It Works

Mooring rope approaches the deck chock → Rope passes through the closed Panama opening → Smooth fabricated contact surface guides the rope path → Local contact force is transferred through the welded base to the reinforced deck structure → Inspection and final coating are completed after installation

Applications

Ocean-going vessels | Cargo ships | Tankers | Container vessels | Bulk carriers | Deck mooring stations | Panama Canal mooring arrangements | Newbuilding and replacement projects

Certifications & Advantages

Certificates can be arranged according to project requirement, inspection scope, material traceability, and class society approval procedure.

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

Drawing & Photos

FAQ

Q1: Does JIS F 2017 Type AP provide a standard SWL?

A1: No. The JIS F 2017 Type AP table provides nominal size, main dimensions, and weight. SWL is not declared in the standard table. Selection should be checked according to the vessel mooring arrangement, rope size, design load, deck reinforcement, weld details, and project approval requirement.

A2: Select nominal size 310 or 360 according to the vessel drawing, mooring rope arrangement, deck layout, and available installation space. The supplied table is for main dimension selection and quotation confirmation.

Q3: What information is needed before quotation?

A3: Confirm standard, Type AP, nominal size, material grade, surface treatment, quantity, certificate requirement, deck installation drawing, delivery destination, and required delivery time. FEA review or class witness inspection should be stated if required.