Marine Weathertight Hatch Cover

Marine Weathertight Hatch Cover

Introduction

Weathertight means that water should not penetrate into the ship under any wind and wave conditions. The tightness requirement of weathertight is lower than that of watertight. The closing devices of various openings on the freeboard deck and enclosed superstructures and enclosures, as well as the bulkhead deck or its upper deck, are required to be weathertight.

Configuration selection

Comparison Difference

Other manufacturer’s low quality hatch	HI-SEA high quality hatch
1. The steel plate has high carbon content, low hardness, and the steel plate is thin and brittle. 2. The surface of the hatch cover is not handled properly, and the shape is not beautiful. 3. The handle is made of cheap carbon steel, which is easy to rust and damage, and the maintenance cost is high 4. The sealing material has poor flexibility and is easy to deform, fracture and corrode. 5. Poor welding process of components will shorten the service life of the hatch cover, and may cause brittle fracture in severe cases.	1. Using high-quality carbon structural steel, the structure is firm and stable. 2. The hatch cover has excellent welding technology and long service life 3. High-quality sealing material is used, which has good sealing performance and is not easy to deform. 4. The hardware components are made of high-quality stainless steel 316, which is strong and corrosion-resistant. 5. The certificates of each classification society are complete, which can meet the different needs of customers. 6. The product provides installation instructions.

type	name	structure	hinge position
A	Single side opening	butterfly clip	A four sides equivalent
			AL long sides equivalent
			AS short sides equivalent
B	double sides opening	wedge  clip	B four sides equivalent
			BL long sides equivalent
			BS short sides equivalent
C	quick action	center rotation  clip	—

Type A

type	nominal size L*B	clear size L1*B1*R1	Cover size L2*B2	cover thickness t	Hatch		butterfly clip		weight kg
					t	H	dia	qty
A AL AS	450*630	420*600*100	508*688	4	4,6	100 150 200 250 450 600	M16	4	24.4
			512*692	6	6,8				31.1
			516*696	8	8,11				37.7
	530*530	500*500*100	588*588	4	4,6				24.2
			592*592	6	6,8				30.8
			596*596	8	8,11				37.4
	630*630	600*600*100	682*682	4	4,6		M20		31
			692*692	6	6,8				39.8
			696*696	8	8,11				48.5
	630*830	600*800*100	688*688	4	4,6				37.4
			692*892	6	6,8				48.5
			696*896	8	8,11				59.7
	830*830	800*800*100	888*888	4	4,6			6	47.1
			892*892	6	6,8				61.2
			896*896	8	8,11				75.3
	830*1230	800*1200*100	888*1288	4	4,6			8	65.2
			892*1292	6	6,8				85.3
			896*1296	8	8,11	800			175.2
	1030*1030	1000*1000*100	1092*1092	4	4,6				146.6
			1096*1096	8	6,8				190.9
	1330*1330	1300*1300*100	1396*1396	8	8,11				331.3

type	nominal size L*B	clear size L1*B1*R1	Cover size L2*B2	cover thickness t	coaming		butterfly clip	weight Kg
					t0	H
B BL BS	450*630	420*600*100	508*688	4	4,6	100 150 200 250 450 600	4	28.7
			512*692	6	6,8			35.4
			516*696	8	8,11			42
	530*530	500*500*100	588*588	4	4,6			28.5
			592*592	6	6,8			35.1
			596*596	8	8,11			41.7
	630*630	600*600*100	682*682	4	4,6			33.5
			692*692	6	6,8			42.4
			696*696	8	8,11			51.2
	630*830	600*800*100	688*688	4	4,6			39.7
			692*892	6	6,8			51.2
			696*896	8	8,11			62.3
	830*830	800*800*100	888*888	4	4,6		6	51.2
			892*892	6	6,8			62.3
			896*896	8	8,11			79.4
	830*1230	800*1200*100	888*1288	4	4,6		8	71.4
			892*1292	6	6,8			91.5

Type C

type	nominal size L*B	clear size L1*B1*R1	Cover size L2*B2	cover thickness t	coaming		centre rotation clip	weight Kg
					t0	H
C	530*530	500*500*100	588*588	4	4,6	150 200 250 450 600	4	44.8
			592*592	6	6,8			51.4
			596*596	8	8,11			58
	630*630	600*600*100	682*682	4	4,6			50
			692*692	6	6,8			58.7
			696*696	8	8,11			67.5
	Φ530	500	588	4	4,6			42.2
			592	6	6,8			47.5
			596	8	8,11			52.8
	Φ630	600	688	4	4,6			46.1
			692	6	6,8			63.2
			696	8	8,11			60.2

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