At a first glance, the Happy Voyager looks like a standard Bardic ship, looking like a huge mandolin. When the ship is approached, one can clearly see singing and dancing on the main deck of the ship, while below decks there is an ongoing glut of liquor consumption, sex, and all kinds of illicit behavior. In short, the Happy Voyager is the biggest party in the known spheres.
In truth, it is a travelling hell. The ship is cursed, much like the Batship, such that anyone who boards the ship must make a saving throw versus magic EVERY ROUND, or become captured by the ship. Once captured, the individual becomes compelled to join the party, and he or she will continue to party until they fall to the deck in exhaustion. The character will sleep normally, noise level not withstanding, and awaken normally. For a few minutes after waking, the character will be aware that they are on a cursed ship, and their thoughts will be on getting OFF! Sadly, this level of awareness ends quickly and the character returns to the party. This happens to every person on the ship, and sometimes a few of them try to pull together long enough to assume control of the ship and smash it into the nearest asteroid (the only known way to break the curse is to destroy the ship), but the curse reclaims them every time. What's more, the rest of the crew do everything they can to stop th e "party poopers."
The Happy Voyager was once an adventure ship, led by a bard. On one adventure, the party had some incredible luck defeating some rather loathsome humanoids. They returned to their ship and started to celebrate, no holed barred. However, one of the humanoids had cast a wish spell (probably from a ring) before expiring, condemning the party to some type of eternal damnation. The dietie who carried out the wish had a "humorous" streak and decided that the upcoming celebration should last forever. Thus began the travels of the Happy Voyager.
The aging process is suspended while aboard the ship, so the original crew is still on board, partying themselves silly. As soon as someone is forcibly removed from the ship, the character rapidly ages to their normal, chronological age. Should the ship ever be destroyed, the original crew, and many of those who have joined since, will age to death in a matter of minutes.
The Happy Voyager has been travelling the known spheres for almost a century. Others have joined over time, usually boarding out of curiosity, and never getting off. There are about 45 people on the ship, and many races are represented. There are humans, demi-humans of all types, a couple of giff, a few humanoids, and even a neogi who thought the ship would be an easy place to get slaves. The neogi is known for telling sick jokes.
It can be considered a standard Iambic ship (Bardic ship), except that the curse ensures that the air is always fresh, the larder is always full of food, and the wine skins never dry up, and any injuries suffered by the crew are healed as they sleep. This party could, literally, go on forever, and the crew can't do a thing about it.