Double Bollard ISO13795-A

description

Double Bollard ISO13795-A

The welded steel bollard is a double bitt bollard according to the standard of ISO13795, suitable for installation on sea-going vessels to meet normal mooring and towing requirements. The posts of the bollards shall be constructed from steel tubes or formed from the plate. A low-friction surface coating is not recommended so as to increase the holding force of the mooring rope under figure-of-eight belay according to ISO standard. Depending on the construction, the mooring bollards shall be classified as two types, which are Type A – with compact base plate and Type B – with a wide base plate.
For mooring purpose, the maximum load in kN on the rope that should normally be applied in-service conditions. For towing purposes, the maximum load on the rope applied to a bollard subjected to a tug boat pull by using an eye splice at the end of the towing rope to connect to the bollard. And the SWL for mooring and towing are different.
The posts of the bollards shall be constructed from steel tubes or formed from the plates.

Both the steel tubes and steel plates should have a yield point of not less than 235N/mm2.

The fins of the welded steel bollard shall be installed to keep the ropes as low as possible so as to reduce the loads to the bollard posts from the mooring or towing ropes. And the eye plates for tying the stopping-off rope or chain shall be provided.

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Features Of ISO13795 Marine Bollard
With smooth edges and surface
Expressed SWL or TOW in tonnes (letter “t”) marking clearly on a surface
International load and stress criteria
The fins and eye plates are provided

Product Code	Nominal size	Dimensions (mm)										SWL						Weight (kg)
		D1	D2	H1	H2	b	L	t	t1	t2	R	For mooring purposes				For towing purposes (Eye splice)
												One-rope use		Two-rope use		KN	t
												KN	t	KN	t	KN	t
DBB001	150	165.2	185	330	90	155	400	8	6	6	40	54	5.5	49	5	98	10	29
DBB002	200	216.3	240	395	115	205	500	8	6	6	50	82	8.4	65	6.7	128	13	46
DBB003	250A	267.4	290	505	135	250	630	12	9	8	60	156	16	134	14	265	27	107
DBB004	250B	267.4	290	505	135	250	630	10	8	7	60	127	13	108	11	216	22	91
DBB005	300A	318.5	340	600	150	290	800	21.5	16	9	70	332	34	306	31	206	62	281
DBB006	300B	318.5	340	600	150	290	800	12	9	9	70	186	19	161	16	353	36	166
DBB007	350A	355.6	380	685	175	340	890	26	19	11	80	443	45	418	43	834	85	431
DBB008	350B	355.6	380	685	175	340	890	14.5	10	9	80	244	25	216	22	491	50	241
DBB009	400A	406.4	430	730	185	380	1000	28	20	13	85	594	61	521	53	1040	106	570
DBB010	400B	406.4	430	730	185	380	1000	15	11	11	85	326	33	269	27	657	67	322
DBB011	450A	457.2	480	770	195	425	1100	29	21	14	90	753	77	612	62	1216	124	712
DBB012	450B	457.2	480	770	195	425	1100	14.5	11	11	90	382	39	292	30	765	78	379
DBB013	500A	508	530	830	230	480	1250	32	23	16	100	992	101	757	77	1511	154	960
DBB014	500B	508	530	830	230	480	1250	15	11	11	100	457	47	326	33	912	93	465
DBB015	550A	558.8	580	900	270	520	1380	31	22	16	110	1131	115	812	83	1619	165	1123
DBB016	550B	558.8	580	900	270	520	1380	21	16	11	110	781	80	541	55	1560	159	787
DBB017	600	609.4	630	950	300	560	1550	33	23	16	120	1401	143	948	97	1893	193	1391