ISO13729 Closed Mooring Chock A Type- Pilotfits Engineering
 
 
 
 
 
 
 
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 ISO13729 CLOSED MOORING CHOCK TYPE A 
 
 
 
PILOTFITS ENGINEERING
 
 
 
 2026-09-02T08:52:48+00:00 
Project Description
 ISO13729 CLOSED MOORING CHOCK -TYPE A
Product Details:
Deck Mounted Closed Type
Size: 250×200/300×250/350×250/400×250/450×250/500x250A
Capacity: SWL22ton to SWL140ton
Finishing: 2-layer of shop primer after sand blasting 2.5
Certificate: DNV-GL, BV, LRS, ABS, RINA, IRS, RS, CCS, KR, NK
Features & Inspection:
The foundation of the closed chocks is to be determined in consideration of the actual load direction. The foundation and welding connections to the hull must ensure a reliable transmission of the maximum loading of the closed chocks to the hull construction, without any plastic deformation or cracks.
The closed chocks are to be coated externally with an anti-corrosion protective finish.
The closed chocks are to be marked by a weld bead or equivalent with their SWL. The SWL shall be expressed in tonnes (letter ‘t’) and be located so that it is not obscured during operation of the fitting.
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Nominal size
 (L x H x D)mm
l1
l2
l3
l3
l4
H1
H2
H3
R
R1
R2
R3
250x200x214
488
453
76
76
265
427
368
108
100
219
160
108
300x250x286
614
565
89
89
330
551
481
144
125
282
212
144
350x250x333
716
660
114
114
403
601
525
168
125
308
232
168
400x250x381
820
754
139
139
475
652
553
192
125
335
236
192
450x250x381
870
804
164
164
524
652
553
192
125
335
236
192
500x250x381
920
854
189
189
574
652
553
192
125
335
236
192
400x250x428
870
796
139
139
500
701
609
216
125
360
268
216
450x250x428
920
846
164
164
550
701
609
216
125
360
268
216
500x250x428
970
896
189
189
600
701
609
216
125
360
268
216
500x400x428
970
896
176
176
600
851
759
216
200
435
343
216
500x250x525A
1,068
1,000
190
190
652
798
675
264
125
409
286
264
500x400x525A
1,068
1,000
193
193
652
948
825
264
200
484
361
264
500x250x525B
1,074
1,000
176
176
652
801
680
264
125
412
291
264
500x400x525B
1,074
1,000
179
179
652
951
830
264
200
487
366
264
Nominal size
 (L x H x D)
R4
R5
R6
T
Welding leg length
 z1
SWL
 (kN)
Wire rope diameter mm
 (Recommend)
Nominal Weight (kg)
250x200x214
86
150
128
22
6
226
18
73
300x250x286
118
180
154
26
6.5
422
24
142
350x250x333
138
200
170
30
7.5
549
28
222
400x250x381
156
250
214
36
9
687
32
310
450x250x381
156
250
214
36
9
706
32
322
500x250x381
156
250
214
36
9
765
32
337
400x250x428
178
250
212
38
9.5
883
36
434
450x250x428
178
250
212
38
9.5
912
36
452
500x250x428
178
250
212
38
9.5
932
36
472
500x400x428
178
250
212
40
9.5
893
36
528
500x250x525A
224
320
280
40
10
1148
44
657
500x400x525A
224
320
280
40
10
1158
44
724
500x250x525B
218
320
274
46
11.5
1413
44
753
500x400x525B
218
320
274
46
11.5
1383
44
825
– A Welding method may be changed based on the same welding volume / strength.
– B SWLs shown in the Table are for reference only. These are based on the loadings as mentioned in Annex A.
“SWL” may be adjusted depending on the actual loading conditions, and the actual marking is to be as per the agreement between the user and the manufacturer.
– C Wire rope diameter (Recommend) is only for reference based on bending ratio of rope through the chock is 12times.
– D Calculated weight is for reference only.
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