ISO 13729 Type B Bulwark Mounted Casting Steel Closed Chock Ship Towing Equipment
ISO 13729 Type B Bulwark Mounted Casting Steel Closed Chock Ship Towing Equipment
Description:
ISO 13729 Type B Bulwark Mounted Casting Steel Closed Chock is a type of ship's mooring and towing fitting installed on the ship side to lead the mooring and towing rope from the ship's inboard to out board. The closed chocks are normally adopted for ships which use wire ropes. The radius of chock surface was designed based on the bending ratios of rope through the chock of not less than twelve times of the wire rope diameter. Type B is bulwark mounted chock.
Main Technical Specification:
- Standard: ISO 13729
- Type: B; bulwark mounted
- SWL Range: 23-141T;
- Materials: Casting C-Mn Steel, Casting Stainless Steel, also can supply special steel for icebreaker.
- Weight: 49 to 442 kg;
- Surface treatment: sandblasting to S2.5 + one layer of epoxy shop primer, Polished Stainless Steel, customized surface treatment available.
- Classification Certificates: CCS, NK, BV, ABS, DNV-GL, LR, KR, RINA, IRS
Main Technical Parameters:
| Nominal size LxHxD |
I1 | I2 | I3 | H2 | R | R1 | R2 | R3 | R4 | R5 |
| 250 X 200 X 214 | 516 | 441 | 466 | 306 | 100 | 233 | 153 | 108 | 96 | 150 |
| 300 X 250 X 286 | 638 | 554 | 588 | 410 | 125 | 294 | 205 | 144 | 128 | 180 |
| 350 X 250 X 333 | 736 | 646 | 636 | 449 | 125 | 318 | 224,5 | 168 | 150 | 200 |
| 400 X 250 X 381 | 834 | 736 | 684 | 450 | 125 | 342 | 225 | 192 | 172 | 250 |
| 450 X 250 X 381 | 884 | 786 | 684 | 450 | 125 | 342 | 225 | 192 | 172 | 250 |
| 500 X 250 X 381 | 934 | 836 | 684 | 450 | 125 | 342 | 225 | 192 | 172 | 250 |
| 400 X 250 X 428 | 882 | 778 | 732 | 515 | 125 | 366 | 257,5 | 216 | 194 | 250 |
| 450 X 250 X 428 | 932 | 828 | 732 | 515 | 125 | 366 | 257,5 | 216 | 194 | 250 |
| 500 X 250 X 428 | 982 | 878 | 732 | 515 | 125 | 366 | 257,5 | 216 | 194 | 250 |
| 500 X 400 X 428 | 982 | 878 | 882 | 665 | 200 | 441 | 332,5 | 216 | 194 | 250 |
| 500 x 250 x 525A | 1078 | 976 | 828 | 551 | 125 | 414 | 275,5 | 264 | 240 | 320 |
| 500 x 400 x 525A | 1078 | 978 | 978 | 701 | 200 | 489 | 350,6 | 264 | 240 | 320 |
| 500 X 250 X 5258 | 1078 | 976 | 828 | 554 | 125 | 414 | 277 | 264 | 238 | 320 |
| 500 X 400 X 5258 | 1078 | 978 | 978 | 704 | 200 | 489 | 352 | 264 | 238 | 320 |
| Nominal size LxHxD |
R6 | d1 | d2 | T | θ | Welding leg length a Z1 |
Welding leg length a Z2 |
SWL h kN |
SWL h T |
Wire rope diameter c (recommended) |
Calculated weight c kg |
| 250 X 200 X 214 | 138 | 108 | 80 | 12 | 44° | 6 | 5 | 226 | 23 | 18 | 49 |
| 300 X 250 X 286 | 164 | 144 | 100 | 16 | 44° | 8 | 6,5 | 422 | 43 | 24 | 100 |
| 350 X 250 X 333 | 182 | 168 | 120 | 18 | 55° | 9 | 7 | 549 | 56 | 28 | 141 |
| 400 X 250 X 381 | 230 | 192 | 120 | 20 | 47° | 10 | 8 | 687 | 70 | 32 | 184 |
| 450 X 250 X 381 | 230 | 192 | 120 | 20 | 47° | 10 | 8 | 706 | 72 | 32 | 194 |
| 500 X 250 X 381 | 230 | 192 | 120 | 20 | 47° | 10 | 8 | 765 | 78 | 32 | 202 |
| 400 X 250 X 428 | 228 | 216 | 120 | 22 | 56° | 10 | 9 | 883 | 90 | 36 | 264 |
| 450 X 250 X 428 | 228 | 216 | 120 | 22 | 56° | 10 | 9 | 912 | 93 | 36 | 276 |
| 500 X 250 X 428 | 228 | 216 | 120 | 22 | 56° | 10 | 9 | 932 | 95 | 36 | 288 |
| 500 X 400 X 428 | 228 | 216 | 120 | 22 | 56° | 10 | 9 | 893 | 91 | 36 | 311 |
| 500 X 250 X 525A | 296 | 264 | 120 | 24 | 53° | 10 | 9,5 | 1148 | 117 | 44 | 379 |
| 500 X 400 X 525A | 296 | 264 | 120 | 24 | 53° | 10 | 9,5 | 1158 | 118 | 44 | 408 |
| 500 X 250 X 5258 | 294 | 264 | 120 | 26 | 53° | 10 | 10,5 | 1413 | 144 | 44 | 405 |
| 500 X 400 X 5258 | 294 | 264 | 120 | 26 | 53° | 10 | 10,5 | 1383 | 141 | 44 | 442 |
Drawing of ISO 13729 Type B Bulwark Mounted Casting Steel Closed Towing Chock Ship Towing Equipment
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