Closed Chock

Closed Chock

Certificate: CCS, GL, BV certificate, etc.
Delivery Time: 15 days
Place of Origin: China
Packing Details: Export standard packaging.

Category:

ISO 13729-2012 Closed Chock – The Ultimate Rope Protection System

Engineered for Safe & Efficient Mooring Operations

Our ISO 13729-2012 Closed Chock is precision marine fittings designed to safely guide mooring and towing ropes from inboard to outboard. These rugged chocks feature an optimized radius design (minimum 12x rope diameter) to prevent wire rope damage while ensuring smooth operation.

Key Features & Benefits

✔ Superior Rope Protection

  • Closed design prevents dangerous rope slippage

  • Radius ≥12x wire diameter prevents kinking/bending

  • Reduces rope wear by up to 50%

✔ Two Installation Options

  • Type A: Deck mounted for traditional setups

  • Type B: Bulwark mounted for space efficiency

  • Both types available for wire rope applications

✔ ISO-Certified Quality

  • Fully complies with ISO 13729-2012

  • Precision-engineered radius for optimal performance

  • Tested beyond standard requirements

✔ Durable Marine Construction

  • Heavy-duty cast steel

  • Corrosion-resistant coatings

  • Long service life with minimal maintenance

Technical Specifications

Feature Specification
Standard ISO 13729-2012
Types A (Deck) / B (Bulwark)
Material Marine-Grade Cast Steel
Radius ≥12x Wire Rope Diameter
Finish Protective Marine Coating
Parameters:
Nominal size L*H*D Calculated weight (kg) l1 l2 l3 l4 H1 H2 H3 R R1 R2 R3 R4 R5 R6 d1 T
250*200*214 73 488 453 76 265 427 368 108 100 219 160 108 86 150 128 108 22
300*250*286 142 614 565 89 330 551 481 144 125 282 212 144 118 180 154 144 26
350*250*333 222 716 660 114 403 601 525 168 125 308 232 168 138 200 170 168 30
400*250*381 310 820 754 139 475 652 553 192 125 335 236 192 156 250 214 192 36
450*250*381 322 870 804 164 524 652 553 192 125 335 236 192 156 250 214 192 36
500*250*381 337 920 854 189 574 652 553 192 125 335 236 192 156 250 214 192 36
400*250*428 434 870 796 139 500 701 609 216 125 360 268 216 178 250 212 216 38
450*250*428 452 920 846 164 550 701 609 216 125 360 268 216 178 250 212 216 38
500*250*428 472 970 896 189 600 701 609 216 125 360 268 216 178 250 212 216 38
500*400*428 528 970 896 176 600 851 759 216 200 435 343 216 178 250 212 216 38
500*250*525A 657 1068 1000 190 652 798 675 264 125 409 286 264 224 320 280 264 40
500*400*525A 724 1068 1000 193 652 948 825 264 200 484 361 264 224 320 280 264 40
500*250*525B 753 1074 1000 176 652 801 680 264 125 412 291 264 218 320 274 264 46
500*400*525B 825 1074 1000 179 652 951 830 264 200 487 366 264 218 320 274 264 46

The description/sizes may be different with goods, please check with us when order.

Tag: Our other products 
Contact by whatsapp

Related products

Scroll to Top