Applying this rule to surging, if three turns are taken round a bollard with a 3-in. F.S.W.
Ukusebenzisa lo mthetho ekukhupheni ngamandla intambo, ukuba imijikelezo emithathu ithe yenziwa kwintsika ekubotshelelwa kuyo intambo yenqanawa nesi-3-ngaphakathi kwintsontelo ye-F.S.W.