Fabricated Double Bitt Mooring Bollard with Wide Base Plate | JIS F 2001 Type B

Fabricated Double Bitt Mooring Bollard with Wide Base Plate | JIS F 2001 Type B

Product Overview

The JIS F 2001 Type B fabricated double bitt mooring bollard is a deck-welded ship mooring fitting used for securing mooring lines on vessel decks. The Type B arrangement uses two fabricated posts on a wide base plate, and the bollard is normally selected by standard type, nominal diameter, SWL, deck arrangement, rope type, welding interface, coating requirement, and certificate scope.

For this welded steel construction, the posts can be made from steel pipe or from steel plate rolled into pipe and welded. The pipe-to-base connection should be prepared with suitable groove welding, and the deck connection should follow the approved shipyard welding detail. Weld seams or edges that may contact the mooring line should be dressed and ground smooth to reduce local rope abrasion during service.

Quick Specifications

• Product type: fabricated double bitt mooring bollard with wide base plate → deck-welded mooring point for ship deck arrangements.

• Standard and type: JIS F 2001 Type B, with ISO 13795 reference → base plate type bollard for ships and marine technology applications.

• SWL range: 29 to 981 kN from the supplied table → used for initial bollard size selection; deck reinforcement and approval remain project-dependent.

• Nominal diameter range: 100 to 800 mm → covers small to large ship deck mooring positions within the provided Type B size range.

• Post outside diameter: Φ114.3 to Φ812.8 mm → key post dimension for visual checking, fabrication planning, and webpage drawing matching.

• Weight range: 18.9 to 3071 kg → useful for quotation, handling, packing, transport planning, and shipyard installation preparation.

• Fabrication route: steel pipe or steel plate rolled into pipe → longitudinal welds and rope-contact areas should be ground smooth where applicable.

• Surface treatment: Sa 2.5 blasting + one layer epoxy shop primer as reference → polished, galvanized, or customized finish can be discussed when specified.

Main Technical Parameters

Main webpage dimensions for JIS F 2001 Type B fabricated double bitt mooring bollard. Dimensions are in mm unless otherwise stated. SWL values are from the supplied table and should not be converted into rope MBL, test load, or breaking load without project confirmation.

Selection & Inquiry Guide

Step 1: Confirm JIS F 2001 Type B fabricated double bitt mooring bollard and select nominal diameter / SWL according to the vessel mooring arrangement.

Step 2: Confirm rope type, rope size, expected rope lead direction, mooring line arrangement, and whether the bollard is for newbuilding or replacement.

Step 3: Confirm deck installation position, deck reinforcement, base plate welding interface, groove preparation, and any shipyard welding or NDT requirement.

Step 4: Confirm fabrication requirement: steel pipe posts or steel plate rolled into pipe, pipe-to-base groove welding, and grinding of weld seams in rope-contact areas.

Step 5: Confirm material grade, surface treatment, coating system, galvanized / polished requirement if applicable, and corrosion protection requirement.

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

Step 7: Provide quantity, vessel type, installation drawing or reference photo, delivery destination, packing requirement, and required delivery time.

Structure

Two fabricated vertical posts | Wide base plate | Pipe-to-base groove welds | Deck welding edge | Smooth ground rope-contact seams | Steel pipe or rolled-plate pipe construction | Shop primer or specified surface treatment

Fabrication, Welding & Mooring Engineering Advantages

• The Type B wide base plate provides a clear deck-welded interface for ship mooring stations; the final deck reinforcement and weld detail should be confirmed by the shipyard or design office.

• Steel pipe posts or rolled steel plate pipe posts can be used according to project requirement, material availability, and fabrication plan.

• When plate is rolled into pipe, the longitudinal seam should be welded and ground smooth, especially where the rope may pass over or contact the post surface.

• Groove preparation at the pipe-to-base connection supports deeper weld penetration and better structural continuity when performed according to an approved WPS.

• The deck welding edge can be prepared for deep penetration welding where required by the project drawing, but the final weld form, weld leg, NDT, and class witnessing should be confirmed before production.

• Smooth, dressed rope-contact surfaces help reduce sharp local contact on wire rope, manila / sisal fiber rope, or synthetic rope during normal mooring handling.

• The supplied SWL range from 29 to 981 kN allows the buyer to select by mooring duty without mixing SWL with rope MBL, test load, or breaking load.

• Surface treatment can be aligned with the vessel painting specification, corrosion environment, and owner inspection requirement.

Custom Attributes

• Standard: JIS F 2001 Type B → use when the vessel drawing or owner specification calls for the Type B base plate bollard arrangement.

• Product Name: Fabricated double bitt mooring bollard → deck mooring fitting for securing mooring lines, not a lifting product.

• Base Form: Wide base plate → provides the deck welding footprint and should be checked with deck reinforcement and weld details.

• SWL Range: 29 to 981 kN → select according to the supplied table and project mooring calculation.

• Nominal Diameter: 100 to 800 mm → main size basis for quotation, drawing matching, and product identification.

• Material Options: C-Mn steel / stainless steel / special steel for icebreaker projects → final material grade and traceability to be confirmed.

• Fabrication Method: Steel pipe or steel plate rolled into pipe → weld seam finishing is important for rope-contact protection.

• Welding Requirement: Groove-prepared pipe-to-base and deck welds → final weld form, WPS, NDT, and class witness scope to be confirmed.

• Applicable Rope Reference: wire rope, manila and sisal fiber rope, synthetic rope → rope size and lead arrangement should be confirmed with the vessel drawing.

• Surface Treatment: Sa 2.5 blasting + epoxy shop primer as reference → final coating, galvanizing, or polished finish follows project requirement.

• Certificate Requirement: available upon request according to project requirement → class inspection and approval scope should be confirmed before quotation.

How It Works

Mooring line is led around the double bitt bollard → Rope load is held by the two fabricated posts → Local force transfers through the pipe-to-base welds and wide base plate → Load is transferred into the reinforced deck structure through the deck weld → Inspection and final coating are completed according to project requirement

Applications

Bulk carriers | Tankers | Container vessels | General cargo ships | Workboats | Tugboats | Ship deck mooring stations | Shipyard newbuilding projects | Replacement and repair projects

Certifications & Advantages

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

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

Drawing & Photos

FAQ

Q1: How should the correct JIS F 2001 Type B bollard size be selected?

A1: Select the nominal diameter and SWL according to the vessel mooring arrangement, rope type, rope size, rope lead direction, deck reinforcement, and project approval requirement. The supplied SWL table is for bollard selection and should not be treated as rope MBL or test load.

Q2: Why is the wide base plate important for Type B bollards?

A2: The wide base plate provides the deck welding interface and helps distribute the bollard force into the ship structure. The actual deck plate thickness, reinforcement, weld form, and inspection requirement should be confirmed by the shipyard or design office.

Q3: What welding and fabrication details should be confirmed before ordering?

A3: Confirm whether the posts are made from steel pipe or rolled steel plate pipe, the pipe-to-base groove weld detail, deck weld preparation, weld leg or penetration requirement, WPS / NDT scope, material certificate, surface treatment, and whether class witnessing is required.