We have corner fairleads as a standard on our B46, but we fitted additional ones for tieing up for the winter period, due to violent winter storms gusting up to 50 - 60 knots. Works pretty good, but is impractical, if you need to climb over the passarelle, so we only use this in winter, when nobody is on board. The new fairleads are made from casted stainless steel, and bolted through deck using backing plates. They are mounted with M6 bolts, which seem a little weak to me, but everything is OK at the moment. See photo attached.