I wouldn't sail this ship if I were you
1. Slow zombies. Shambling, gormless members of the living dead, often bearing an odd resemblance to the sort of humans the author believes should think more closely about their life choices and aspirations. Method of disposal: destroy the brain.
2. Fast zombies. As above, except able to sprint. Method of disposal: destroy the brain, but more quickly.
3. Immobile zombies. Members of the living dead who are in fact not able to move about at all. Method of disposal: as they are not particularly dangerous, this depends on how you feel about having dead people around the place. If you meet one, the nice thing to do might be to prop it up in front of a good film.
4. Ant zombies. Interestingly, the ant is particularly susceptible to zombification. It is quite hard to tell if an ant is a zombie one or not but obviously you should avoid being bitten by the zombie ones. Method of disposal: identify, then destroy the brain.
5. Zombles. There have not been Wombles on Wimbledon Common for some years, following an effective culling program by the local golf course, who objected to the mounds of earth left by their burrowing activities on the greens. Instead, the golf course now has to deal with Zombles. Although they are largely peaceful and still aid with litter-picking, they have a tendency to erupt from bins in a way that unsettles patrons. However, as they can be useful in chivvying up the slower players and still spend the majority of their time underground, the golf course has largely worked around the Zomble issue so far. It may be that they are concerned about the negative publicity that a highly visible extermination campaign might entail. Method of disposal: Zombles are remarkably self-contained and will not stray from Wimbledon Common. The easiest way of dealing with them may just be to admit the problem, seal off the Common and give it up for lost.
6. Zombie ghosts. Interestingly, if a poltergeist is bitten by a zombie it is possible for the resulting creature to be briefly unundead. Method of disposal: nature abhors a double negative, so infestations of zombie ghosts tend to clear up by themselves. The only problem may arise if there is a necromancer around to attempt a state of ununundeadness; this deeply unstable situation may result in a messy explosion.
7. Armies of zombies who have stored their brains in a massive locked cave full of zombie brains somewhere deep underground which is also guarded by lots of zombies. Method of disposal: probably you are screwed.
