This work is accompanied by a copy of a certificate of authenticity from Short Street Gallery which states: 'This ilma refers to events that happened when Roy was 17. His father and brother were on the Sunday Island Mission Lugger when a big tidal rip came through Gindari Galgool [sic] strait. No lugger had ever survived going through this strait, however on this memorable occasion Roy's father and his brother survived. The circles represent the whirlpools while the crescents represent waves and the bottom oval shape represents the rip.'