The diameter of the circle first described by a ship's turn. Tactical diameter is larger than final diameter due to the momentum of the ship, which drives the ship outside of the arc of its turn at first.
Idayamitha yokuqala echazwa kukujikela kwenqanawe. Idayamitha enkulu kunesokugqibela ngenxa yamandla okuzihambela kwenqanawe, aqhubela inqanawe le ngaphandle kwesinqingatha sesazinge sokuqala kwayo ukujika.