If ships in the column are of the same class it is a fairly simple matter to calculate this moment as occurring at a certain time interval after the moment at which the senior officer, or ship to be next ahead, has put her engines ahead.
Ukuba inqanawa ekuluhlu ingakwihlelo olunye kulilungelo elilula lokubala ngalomzuzu xa kuqhubeka okwexeshana elithile lekhefu emva kwexeshana elinokuthi umphathi ophezulu, okanye inqanawa engaphambili kwelandelayo, ingabeka i-enjini ngaphambili.