>>183
・船外活動 = Extra Vehicular Activity: (EVA)
↓↓like this↓↓
http://sts-114.jaxa.jp/mission/contents/eva.html
船=ship、 外=out,external、 活動=activity
・艇内メカ担当 = person who is in charge of ship mechanics
・管制メカ担当 = person who is in charge of control mechanics
艇=boat 内 = in, inside 、担当=charge
メカ ← メカニック(mechanic) or メカニズム(Mechanism)
管制 = control