船舶载重线要求和典型缺陷（三）
载重线船舶载重线要求和典型缺陷
8 锚链柜和锚链管
1. 锚链柜和锚链管的要求
2003年修正案增加了对锚链管和锚链柜的要求
锚链管和锚链柜向上至露天甲板应为水密。
如果设有出入口，则应用坚固的盖关闭并用间距紧密的螺栓紧固。
放置锚链的锚链管应装设永久性附装的关闭装置以使浸水减至最少。
2. 锚链柜和锚链管的检查
锚链管至艏楼甲板应保持水密
检查锚链弃链器处舱壁是否锈蚀严重有无变形、开口处的紧固螺栓是否缺失，锚链柜、锚链筒有无局部锈穿、破裂。
3. 锚链柜和锚链管的相关典型缺陷
锚链管没有关闭装置
9 泄水孔、进水孔和排水孔
1. 泄水孔、进水孔和排水孔的检查
检查干舷甲板舷墙的排水舷口面积是否过小，不符合公约要求
排水舷口下边缘距离甲板高度是否过大
干舷甲板舷墙处的排水口应使用栏杆或铁条保护，其间距约为230mm
对于设有盖板的排水舷口应留有一定的空隙，防止锈死。甲板上的泄水孔防止堵塞。
确认管路和阀件无过度腐蚀和损坏，操纵装置灵活有效，开关指示正确。
本期将对载重线相关内容进行汇总！！！
1. 载重线相关高度要求（单位mm）
2. 载重线相关可导致滞留的缺陷
根据IMO ResolutionA.1119（30），船舶出现以下问题，可能会导致滞留！！！
Areas under the Load Lines Convention
1.Significant areas of damage or corrosion, or pitting of plating and associated stiffening in decks and hull affecting seaworthiness or strength to take local loads, unless properly authorized temporary repairs for a voyage to a port for permanent repairs have been carried out.
2. A recognized case of insufficient stability.
3. The absence of sufficient and reliable information, in an approved form, which by rapid and means, enables the master to arrange for the loading and ballasting of the ship in such a way that a safe margin of stability is maintained at all stages and at varying conditions of the voyage, and that the creation of any unacceptable stresses in the ship's structure are avoided.
4. Absence, substantial deterioration or defective closing devices, hatch closing arrangements and watertight/weathertight doors.
5. Overloading.
6. Absence of, or impossibility to read, draught marks and/or Load Line mark.
例如
3. 典型案例分析
CASE1:
M/V XXX, container ship
Year of keel laid: 1998
Gross tonnage: 9960
Deficiencies:
03105 Hatch cover side plates damaged and holed in No.2, No.5 and No.6 hatch, fail to keep weathertight.
Deficiency Action taken: 30 PSC Action taken:70
CASE2
M/V XXX, container ship
Year of keel laid: 1989
Gross tonnage: 46690
Deficiencies:
03102 Position of freeboard deck mentioned in LL Cert different with the freeboard assignment booklet.
Deficiency Action taken: 17 PSC Action taken:70
希望通过这3期载重线知识点的罗列和典型案例的分享，让大家对载重线公约相关要求有更深刻的了解。这几个问题来帮大家自测和巩固～～～
4. 问题与思考:
核定“A"型船舶干舷的特殊条件有哪些方面？
载重线公约对通风筒／空气管的要求有哪些？
载重线公约关于机舱开口有什么要求？
哪些位置应设置舷墙或栏杆？
对于用舱口盖来保证货舱口风雨密的船舶，其舱口盖布要满足什么要求？固定其舱口盖的措施有哪些？