These family crests (In Japanese, KAMON) are called 'Nami Mon' in JAPAN.
|Swirl-like wave circle||Swirled waves||Three swirled waves||Overlapping waves in circle|
Drawing method of "Overlapping waves in circle"
Waves were first used as patterns in the Fujiwara Period, and they later became motifs for crests, Though they are elegant, samurai often used wave crests because they symbolized battle. The waves' crashing into the shore or rocks and returning back into the ocean evoked the charge and retreat of battle. (From 'Family Crests of Japan' ICG Muse, Inc.2001)