It should be noted that the length of ancora catenain metris calculi non debent, sed in navigationibus communibus nodis adhibentur. Longitudo cuiuslibet sectionis ancorae marinae est circiter 27.5 metrorum. Quomodo haec unitas facta sit, necesse est explicare.
Picis longitudo catenae ancorae differt a celeritate unitatis pix in navigatione adhibita. Realiter derivatum est ex unitatibus Anglicis, ortho- graphia. Longitudo unius ambitus est circiter 1.8288 metrorum. Quia imperium Britannicum in navigatione validum erat, postea vexillum internationale factum est. Postea uniformiter stipulatum est longitudinem ancorae catenae 27.5 metrorum fuisse. In usu actuali, unaquaeque pars ancorarum catena ex compede componitur, et sectiones per nexus delapsos nectuntur. In universum ligamen catenae albae spargitur, ut cantavit scire quot catenae anchorae immissae sunt.
Pars ultima catenae plerumque rubra spargitur, ut moneat nautas ut catenae ad finem pervenerint. Vulgo, ancora cathena fixa est titubante. Si navis retardata non compleverit antequam dimittatur, catena ancora e navi erumpere et evolare verisimile est. Ad hoc ne fiat, ultima sed una pars ancorae cathena flava spargi solet, usui negotiationis luminum similis.
According to international practice, each anchor chain of a large commercial ship usually has only 12 to 13 knots, and the length is between 330m and 357.5m. However, this is only a vague standard value. Specific to a ship, it needs to be determined according to the outfitting number of the ship. The calculation method of outfitting number is very complex, so we won't repeat it here. We just need to understand that if the outfitting number of a ship is larger, it means that the ship is more affected by wind and waves at sea, so it needs to be equipped with heavier anchors, thicker anchor chains and ropes. Generally speaking, the outfitting number of warships is higher than that of ordinary freighters, but it is not suitable to lengthen the anchor chain after reaching 13 knots. Because it will prolong the anchor receiving time, the anchor chain needs to be thickened, or even more than one anchor chain to ensure stability.
