Compare Admiralty and Hall anchors for heavy-duty salvage and emergency floating breakwaters. Explore seabed suitability, handling, load verification, and OEM procurement with Nanjing Taidun Marine Equipment Engineering Co.,Ltd, helping buyers define safer, project-specific anchor requirements.
NANJING TAIDUN Introduced the **customized configuration** (16 cylindrical fenders Ø600×300mm, L4400mm per system), engineering solutions for **pile position variances** and **4-5m tidal range**, and installation best practices.
NANJING TAIDUN Introduced the *mooring bollard retrofit on existing concrete docks**, emphasizing evidence-first planning and structural verification. It details the three retrofit scenarios (pattern-matched, new anchorage, addition), load determination using BS6349-4 methodology, anchorage design principles, and installation sequencing for operating terminals. **Added value sections** include chemical anchor installation procedures, live-dock work planning, and OEM procurement criteria.
NANJING TAIDUN explains **mooring bollard calculation** using both mariner and civil engineering approaches. It bridges the gap between line-based and displacement-based methods by introducing the **winch rendering concept**—where bollard design loads are limited to 50–60% of line MBL. Covers step-by-step calculation, key standards (BS 6349, ISO 13795/13797, OCIMF MEG-4), dynamic mooring analysis, and practical procurement checklists.
NANJING TAIDUN provides an in-depth analysis of the U.S. Navy's In-Situ Bollard Tester patent (U.S. Patent 11,215,541), awarded in 2022. Developed by NAVFAC EXWC engineers and interns, the device uses a modular steel frame and hydraulic tensioner system to apply controlled, multi-angle pulling force directly to bollards at their installed location—replacing traditional tugboat pull testing.
This comprehensive guide compares **cylindrical rubber fenders** against D-type, W-type, block, and pneumatic rubbe fenders. Nanjing Taidun provides technical specifications, application matrices, and a step-by-step selection framework. Essential for port engineers, shipyard specifiers, and marine equipment distributors.
NANJING TAIDUN explains how **floating pneumatic rubber fenders** work in marine operations, covering construction, energy absorption principles, and application scenarios. The article details the multi-layer reinforced rubber design, ISO 17357 compliance requirements, and the physics of air compression that enables low reaction forces with high energy absorption. It compares CTN and sling-type configurations, provides selection criteria including the berthing energy calculation formula, and outlines maintenance protocols.
Foam Filled Fenders vs Yokohama Floating Fenders: learn how to assess, repair, and prevent in-field cuts and gouges. Compare repair urgency, buoyancy, pressure-loss risks, offshore maintenance needs, and OEM recommendations from Taidun Marine.
NANJING TAIDUN Introduces the chain grade classifications—Grade 2/3 for vessel anchoring and R3 through R6 for offshore mooring applications—along with classification society certification requirements from ABS, LR, BV, DNV, and others. It details the flash butt welding manufacturing process, quality control checkpoints including NDT and proof load testing, and practical sizing selection tables.
Compare Super Arch Rubber Fender vs Super Cell Fender for tight berths. Learn how to select the right marine fender by energy absorption, reaction force, installation space, vessel type, and OEM requirements. Taidun Marine provides customized fender solutions for global brands, ports, shipyards, and marine contractors.
NANJING TAIDUN presents a whole system approach to marine fender performance, moving beyond component-level selection to system-level engineering. Drawing on PIANC WG211 (2024) and ISO 17357 standards, it covers application engineering, performance correction factors, component design, quality control, and lifecycle management.
Explore the top double bitt bollard manufacturers and suppliers in Vietnam. Learn how to select marine bollards by load, fabrication, corrosion protection, standards, testing, OEM branding, and project documentation. Discover why Nanjing Taidun Marine is a trusted OEM partner for bollards, fenders, and anchoring equipment.
How to Install Chain and Tire Net for Yokohama Fenders: A Complete Guide from Nanjing Taidun delivers a comprehensive, engineering-grade approach to CTN installation for pneumatic rubber fenders. Covering ISO 17357 Type I classification, material selection (chains, tires, rubber sleeves), and an 8-step installation protocol with checklists, this guide fills critical information gaps left by generic articles. It includes maintenance schedules, common mistakes and prevention, lifespan expectations, and storage protocols. Essential for port engineers, marine maintenance teams, and procurement specialists demanding precision and compliance.
NANJING TAIDUN provides construction details, ISO 17357 compliance requirements, practical selection guidance, and total-cost-of-ownership analysis. It emphasizes that quality depends on standards compliance and manufacturing capability, not brand name—empowering buyers to make informed decisions.
Floating Donut Fender vs Hydro-Pneumatic Fender for offshore drilling rigs: compare pile-guidance, underwater hull protection, tidal performance, OEM customization, and selection criteria. Nanjing Taidun delivers tailored marine fender solutions for global brands and projects.
Explore the top foam filled fender manufacturers and suppliers in the Philippines. Compare OEM, local supply, selection criteria, testing, custom branding, and procurement steps. Discover why Nanjing Taidun Marine is a reliable OEM partner for ports, shipyards, marine brands, and bulk projects.
Ship-to-ship operations market reaches $1.41T in 2025, driving demand for pneumatic rubber fenders. OEM guide from NANJING TAIDUN covers STS growth drivers, 2025-2026 regulatory changes (CDI/ICS/OCIMF, CCS), fender selection, and quality requirements for brand owners and wholesalers.
Complete guide to ship launching airbags: ISO 14409/17682 compliance, calculation formulas, selection criteria, step-by-step procedures, and real case study. Expert insights from OEM manufacturer NANJING TAIDUN for shipyards and marine equipment buyers.
Compare Danforth and Matrosov anchors for workboats. Learn the differences in holding power, seabed performance, weight efficiency, OEM options, coatings, sizing, and commercial marine applications. Get expert anchor selection guidance from Taidun Marine.
Whole system approach to fender performance: Why component procurement fails. Expert analysis from OEM manufacturer NANJING TAIDUN covers application engineering, system design, PIANC 2024 compliance, quality control, and real-world case studies. Essential reading for port engineers and fender OEM partners.
Bulwark Mounted

Nominal Size (mm) | SWL(KN) | Dimensions(mm) | Mass (KG) | ||||||
A | B | L | H | H1 | C | t | |||
425x280 | 700 | 400 | 280 | 925 | 780 | 516 | 450 | 36 | 385 |
600x450 | 1020 | 600 | 450 | 1160 | 1010 | 706 | 504 | 32 | 629 |
600x450 | 2040 | 600 | 450 | 1160 | 1010 | 706 | 504 | 40 | 680 |
600x450 | 2500 | 600 | 450 | 1160 | 1010 | 706 | 504 | 50 | 850 |
600x450 | 3500 | 600 | 450 | 1160 | 1010 | 706 | 504 | 55 | 1010 |
DIN 81915 Type A Bulwark Chock

Type (mm) | SWL (KN) | Dimensions(mm) | Mass (KG) | ||||||
W1 | W2 | L1 | H | H1 | B | S1 | |||
A1 | 10 | 125 | 90 | 285 | 250 | 175 | 160 | 10 | 18 |
A2 | 20 | 160 | 115 | 360 | 315 | 225 | 200 | 12 | 26 |
A3 | 30 | 200 | 140 | 450 | 390 | 275 | 250 | 14 | 42 |
A5 | 50 | 250 | 180 | 550 | 480 | 340 | 300 | 16 | 74 |
A8 | 80 | 320 | 225 | 680 | 585 | 415 | 360 | 18 | 120 |
A12 | 120 | 400 | 270 | 840 | 710 | 500 | 440 | 20 | 185 |
A20 | 200 | 500 | 320 | 1020 | 840 | 595 | 520 | 22 | 285 |
| A32 | 320 | 600 | 400 | 1300 | 1100 | 800 | 700 | 35 | 795 |
Material:GS-38.3 DIN1681/ZG230-450 GB/T11352-2009
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