ISO 13795-2012 Marine Double Bollard Type A

ISO 13795-2012 Marine Double Bollard Type A

Introduction:

ISO 13795-2012 specifies the requirements and dimensions for a type A marine double bollard used for mooring and towing operations on board ships and at port facilities.

A double bollard consists of two vertical posts (or horns) mounted on a base plate with a crossbeam connecting the two horns. The type A double bollard has symmetrical horns with a circular cross-section and a constant diameter along the length of the horn.

The ISO 13795-2012 standard specifies the minimum dimensions for the horns and the base plate, as well as the distance between the horns and the height of the crossbeam. The bollard is designed to withstand a maximum load, which is specified in the standard.

Type A double bollards are commonly used in ports and harbors for mooring larger vessels, such as tankers and container ships. They can also be used for towing operations and are usually made of steel or other durable materials to withstand the harsh marine environment.

Parameters of ISO 13795-2012 Marine Double Bollard Type A:

SWL of ISO 13795-2012 Marine Double Bollard Type A:

Nominal Size	Welding leg length		SWL						Calculated weight
			For mooring purposes (Figure-of-eight belay)				For towing purposes (eye splice)
Dn	z1	z2	One-rope use		Two-rope use				(kg)
			(kN)	(t)	(kN)	(t)	(kN)	(t)
150	3.5	3.5	54	5.5	49	5.0	383	10	29
200	3.5	3.5	82	8.4	65	6.7	579	13	46
250A	5.5	4	156	16	134	14	1315	27	107
250B	5.5	4	127	13	108	11	215	22	91
300A	10.5	4	332	34	306	31	3365	62	281
300B	10.5	4	186	19	161	16	352	36	166
350A	12.5	5	443	45	418	43	5062	85	431
350B	7	4	244	25	216	22	2855	50	241
400A	12.5	6	594	61	521	53	6632	106	570
400B	8	5	326	33	269	27	3816	67	322
450A	12	7	753	77	612	62	8201	124	712
450B	8	7	382	39	292	30	4483	78	379
500A	12.5	8	992	101	757	77	10928	154	960
500B	8	5	457	47	326	33	5474	93	465
550A	11.5	8	1131	115	812	83	12635	165	1123
550B	11.5	5	781	80	541	55	9280	159	787
600	11.5	8	1401	143	948	97	15539	193	1391

ISO 13795-2012 Marine Double Bollard Type A in Factory: