Are you looking for a bulwark-mounted Panama chock? Please note that, according to international standards, the Type A Deck Panama Chock is specifically designed for deck installation. Is the Type A Panama chock deck-mounted or bulwark-mounted? The answer depends on the reference standard: ISO 13728 defines Type A as deck-mounted, while the older DIN 81915 standard may differ. To learn more about the differences, read our guide comparing Panama Chocks Type A and Type B, or click here to [buy bulwark-mounted mooring chocks] directly.
Type B Panama Chock
- Type: Bulwark Mounted Panama Chock
- Material: Cast Steel
- Nominal Size: 310mm, 360mm
- Weight: 228KG to 248KG
- Capacity: SWL 70ton to 79ton
- Standard:ISO 13728/ JIS F2017/ DIN81915Certificate: CCS, DNV, ABS, BV, LR, KR, etc
- Tags: Panama Chock; Mooring Chock
Key Features of Bulwark Mounted Panama Chock
Vertical Mounting Design: Unlike deck-mounted models, the Bulwark-mounted Panama chock is installed vertically on the ship’s bulwark or side, providing optimal rope guidance and reducing friction during mooring operations.
With or Without Horns: We offer *bulwark Panama chocks with horns (DIN Type B, JIS Type BP) for enhanced rope guidance, as well as bulwark Panama chocks without horns (DIN Type A, JIS Type BC) for standard applications.
Single and double configurations: We offer *single bulwark Panama chocks (DIN A8/B8 type) for standard mooring and double bulwark Panama chocks (DIN A12/B12 type) for heavy-duty applications requiring multiple mooring lines.
Panama Canal Compliance: All of our bulwark mooring chock products comply with the Panama Canal Authority’s strict requirements for vessel transit through the locks, ensuring smooth passage through this critical waterway.
Standard Classifications & Clarification
Note on Standard Classification: To ensure accurate procurement, please note the standard correspondences for the Type B Bulwark-Mounted Panama Chock:
ISO and JIS Standards: In ISO 13728 and JIS F 2017, the ISO 13728 Type B bulwark Panama chock and the JIS F 2017 BC/BP Type bulwark chock explicitly refer to bulwark-mounted structures. The BC type is without corners, while the BP type features corners to provide better rope guidance.
DIN Standards: In the DIN 81915 standard, both the DIN 81915 Type A Panama chock (without corners) and the *DIN 81915 Type B Panama chock (with corners) refer to bulwark-mounted configurations. Type A8 is a single-chock configuration, while Type A12 is a double-chock configuration.
National Standard: We also supply GB/T 11586 BC-type / BP-type bulwark Panama chocks for domestic and specific international shipyard projects.
Manufacturing Process & Material Options
OLIPORTS’ bulwark mooring chocks are available in two main manufacturing processes to meet different structural requirements:
Cast Steel Design: As a specialized cast steel bulwark Panama chock manufacturer, OLIPORTS use high-quality carbon steel (ZG230-450) or alloy steel for casting. This provides exceptional strength and the ability to produce complex shapes for heavy-duty bulwark mooring chock applications, making it particularly suitable for SWL requirements ranging from 48 metric tons to 100 metric tons
Welded Design: For projects requiring faster lead times or specific modifications, our welded bulwark Panama chocks are fabricated from high-strength marine-grade steel plates. OLIPORTS offer highly competitive welded bulwark Panama chock prices without compromising quality. Welded designs are typically 10–15% lighter than cast steel versions.
Technical Data: Panama Chock Dimensions, Weight & Drawing
Accurate dimensions, drawings, and weight data for the Bulwark Panama Chock are essential for shipyards when designing bulwark layouts. Below is the standard specification table for our Type B Bulwark-Mounted Panama Chock.
- ISO 13728 Standard
Type B – Bulwark Mounted - JIS F 2017 Standard
BC/BP Type – Bulwark Mounted - DIN 81915 Standard
Type A/B – Bulwark Mounted - GB/T 11586 Standard
(Type AC – Deck Mounted)
ISO standards primarily specify two core dimensions (310 mm and 360 mm), which are applicable to most international ocean-going vessels.
| Nominal Size (mm) | L (mm) | l1 (mm) | SWL (kN) | Approx. Weight (kg) |
|---|---|---|---|---|
| 310 | 310 | 720 | 471 | 265 |
| 360 | 360 | 770 | 775 | 295 |
The Japanese Industrial Standards (JIS) offer a wider range of sizes, ranging from 310 mm to 500 mm, and are commonly used on vessels built by Japanese shipowners or Japanese shipyards.
| Nominal Size (mm) | Type | L (mm) | L1 (mm) | H1 (mm) | SWL (Ton) | Approx. Weight (kg) |
|---|---|---|---|---|---|---|
| 310 | BC | 310 | 708 | 541 | 30 | 261 |
| 310 | BP | 310 | 708 | 541 | 30 | 278 |
| 360 | BC | 360 | 760 | 591 | 50 | 298 |
| 360 | BP | 360 | 760 | 591 | 50 | 318 |
| 400 | BC | 400 | 804 | 631 | 80 | 345 |
| 450 | BC | 450 | 860 | 681 | 120 | 378 |
The naming and sizing systems used in German/European standards (DIN) are completely different from those in Asian standards. The deck-mounted type is referred to as Type C in DIN standards.
| Type | Configuration | SWL (kN) | L (mm) | L1 (mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|
| A8 | Single, Without Horns | 80 | 390 | 450 | 52 |
| B8 | Single, With Horns | 80 | 390 | 450 | 68 |
| A12 | Double, Without Horns | 120 | 460 | 530 | 95 |
| B12 | Double, With Horns | 120 | 460 | 530 | 115 |
Chinese National Standards (GB) are largely based on JIS standards, but there are slight differences in certain specific thicknesses and weights (generally, cast steel parts designed to Chinese National Standards are more optimized and slightly lighter).
| Nominal Size (mm) | L (mm) | L1 (mm) | L2 (mm) | H1 (mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|
| 310 | 310 | 708 | 652 | 541 | 199 |
| 360 | 360 | 760 | 704 | 591 | 245 |
| 400 | 400 | 804 | 744 | 631 | 285 |
| 450 | 450 | 860 | 790 | 681 | 325 |
| 500 | 500 | 910 | 840 | 731 | 375 |
