Rescue Board

 is a plank.

Obtaining

 * Crafted by a Lumberjack (Lv. 200) from
 * 1 Ancestral Wood
 * 1 Bewitched Wood
 * 10 Holy Bamboo Wood
 * 1 Golden Bamboo Wood
 * 1 Magic Bamboo Wood
 * 10 Aspen Wood

Uses

 * Used in the craft of
 * Sylvan Substrate