Japanese Assassin Espionage Martial Art Training
Puzzle 14 of Deep Sea Journey Hard Pack
Question is: Japanese Assassin Espionage Martial Art Training
and the answer is: NINJUTSU
Word Meaning:
NINJUTSU — (martial arts) A Japanese martial art that is a collection of techniques originally practiced for Japanese espionage purposes, and includes methods of gathering information, nondetection, avoidance, and misdirection techniques. Used by ninja (忍者).
Definitions from Wiktionary.