150–350mm Cross Bitt Bollards | Cruciform Mooring Bollards for Ship Deck

Product Overview

Cross bitt bollards are deck mooring fittings used to secure mooring lines on ships.

Single cross bitt cruciform bollards are designed and manufactured in accordance with GB10106-88, providing reliable mooring points for both steel wire and synthetic fiber ropes.

They provide strong and stable mooring points for both steel wire ropes and synthetic fiber ropes in marine environments.

Quick Specifications

Nominal Diameter: 150–350 mm → Defines bollard size and load capacity

Breaking Load: 117–686 kN → Defines maximum mooring strength

Applicable Rope: Steel Wire & Fiber Rope → Ensures compatibility

Type: Type A / Type B → Defines installation method

Material: Mild Steel / Stainless Steel → Provides strength and corrosion resistance

Weight: 31–204 kg → Defines handling and installation requirement

Standard: GB10106-88 / JIS F2804-76 → Marine compliance

Surface Treatment: Sa2.5 + Coating → Improves corrosion resistance

Installation: Welded Base → Ensures structural stability

Main Technical Parameters

Selection Guide

Step 1 – Select Nominal Diameter → 150–350 mm based on mooring load

Step 2 – Confirm Breaking Load → 117–686 kN for required strength

Step 3 – Select Rope Type → Steel wire or fiber rope

Step 4 – Select Type → Type A (deck weld) or Type B (liner weld)

Step 5 – Confirm Installation → Based on deck structure

Step 6 – Select Material → Mild steel or stainless steel

Structure & Components

Cross arms | Vertical post | Base plate | Welded structure

Custom Attributes

Diameter: 150–350 mm → Defines size

Load Capacity: up to 686 kN → Defines mooring strength

Rope Compatibility: Wire & Fiber → Multi-purpose use

Installation: Welded → Structural stability

Material: Steel / Stainless → Durability

Surface: Coated or polished → Corrosion resistance

Standard: GB10106 → Compliance

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

Custom Configuration & Inquiry Guide

Please provide vessel type, required load, rope type, and installation preference.

How It Works

Mooring lines are wrapped around the cross arms of the bitt, allowing secure fixation of ropes. The cruciform design distributes load evenly to ensure safe mooring.

Applications

Ship mooring | Port berthing | Offshore vessels | Tug boats

Certifications & Advantages

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate; simple structure, high strength, reliable mooring performance, easy installation.

Drawing & Photos

General arrangement drawing | Installation details | Product photos

Ordering

MOQ: 1 Unit | Delivery Time: 30–60 Days | Customization: Available

FAQ

Q1: What is the difference between Type A and Type B cross bitt bollards?

A:

• Type A
  → Welded directly onto the ship deck
  → Simpler installation
  → Suitable for standard deck structures
• Type B
  → Welded onto a deck liner or foundation plate
  → Provides additional structural support
  → Suitable for higher load requirements or reinforced deck areas

Q2: What installation conditions require Type B instead of Type A?

A: Type B is typically used when higher loads are involved or when the deck requires reinforcement through a liner or base plate to ensure structural safety.

Q3: How to select the correct cross bitt size?

A:

Selection should be based on the required mooring load (kN) and rope diameter, following these guidelines:

• Step 1 – Determine mooring load
  → Select bollard size based on required mooring load and rope diameter.
• The bollard breaking load should be selected with sufficient safety margin above the maximum expected mooring force, typically in the range of 1.5–2.0 depending on design conditions and classification society requirements.
• Step 2 – Match rope diameter
  → Ensure the bollard size is compatible with:
  • Steel wire rope diameter
  • Synthetic fiber rope diameter
• Step 3 – Select nominal diameter
  Typical reference:
  • 150–200 mm → small vessels
  • 200–300 mm → medium vessels
  • 300–350 mm → large vessels
• Step 4 – Confirm installation type
  → Type A (direct weld) or Type B (reinforced base)