Editing City of Dead Gods:Main Page (section)

===Air Quality onboard Ship===
For the first month after putting out from an atmosphered port, your ship's air quality is perfect, as long as the correct number of crew are on hand. If the number varies by 25% above or below, it increases or decreases the amount by one week. After this period, all living creatures subject to it are fatigued as the amount of carbon dioxide increases. After one week of fatigue, living beings are nauseated at all times, and after that, living beings begin to take 1d2 points of CON damage each day. There are a number of spells and effects that can remedy this, the simplest of which is to bring some plants along. The Jormungandr, being a reasonably small barge type ship, doesn't have any major plants sufficient to correct breathity goodness. The Jormungandr does run a normal amount of crew.