In Mad Zeppelin, during each turn, each player gets two chances to play a Traitor card and take actions with that Traitor. Each traitor searches for cargo and gold, then activates their ability and/or throws cargo overboard.
The exact phrasing for throwing cargo is just slightly vague, though:
Throw Cargo overboard. If your current Traitor’s color has been rolled on the dice,
show a Cargo card from your hand. You must then pay Gold to the Safe equal to the
number of Gold coins on the card.This represents bribing the ever-present guards on
the Nostria. After paying the guards, the Cargo card is “thrown overboard.” Keep it
face-up in front of you.
Does this mean only throwing one cargo overboard per Traitor played, or can a Traitor throw cargo overboard more than once per turn?