Anyone even entertaining the idea of a seaborne existence must have the following assets:
A. At least ten years of experience at sea, either in commercial or military service. Simply owning a cabin cruiser for that amount of time does not qualify.
B. A sturdy, wind-powered craft, at least one hundred feet or more with equipment constructed mainly of nonorganic, noncorrosive material.
C. The ability to distill fresh water on a constant basis without relying on rain! Not only must your system and device be simple, easy to maintain, and resistant to rust, but you must also have a backup system aboard.
D. The ability to catch and prepare food without the use of non-renewable fuel. In other words, no propane stove.
E. Complete knowledge of every aquatic plant and animal. All vitamins and minerals obtained on land can be replaced by a seaborne substitute.
F. Full emergency equipment for everyone in your group should the need to abandon ship arise.
G. Knowledge of the location of a safe haven. All boats need a port, no matter how primitive. It could be a collection of rocks off Canada or some barren atoll in the Pacific. No matter what it is, unless you know where your port in a storm is, you are, literally and figuratively, sunk.
With all these in place, it might be easier to simply compromise your living conditions. Use your boat as a movable home as you forage from small island to island, or coastline to coastline. This will be a more comfortable, safer existence than on the open sea. Even so, keep a watch for zombies in shallow water, and always,always, watch your anchor line! Theoretically, this type of life is possible, but it is not recommended.
Duration
How long will you have to endure this primitive existence? How long before the walking dead simply crumble to dust? How long before life can return to even a semblance of normality? Sadly, there is no exact figure. The first zombie to rise will, unless it is frozen, embalmed, or otherwise preserved, completely decompose after five years. However, by the time the undead have world domination, ten years might have already passed. (Remember, you will be fleeing when the war begins, not at its end.) When zombies truly dominate the planet, and there are no more fresh humans to infect, it will truly take five years for the majority of them to rot away. Dry climate and freezing will preserve many, keeping them functional for, potentially, decades. Bandits, refugees, and other survivors like yourself may become further prey, adding a newer but smaller generation to the older, decaying horde. By the time these turn to dust, the only undead left will be those preserved artificially or constantly refrozen with each winter. These you will have to watch for decades to come. Your children and even your children’s children will have to be wary of them. But when will it be safe to come out?
Year 1: A state of emergency is declared. You flee. Your defenses are built; your compound is established. Labor is divided. A new life begins. All this time, you monitor radio and television broadcasts, keeping a close watch on the unfolding conflict.
Year 5–10: Somewhere within this time period, the war ends. The dead have won. The signals stop. You assume that the entire world is overrun. You continue your life, keeping a close eye on defense as bandits and refugees might begin to enter your zone.
Year 20: After two decades of isolation, you consider sending a scouting party. Doing so will risk discovery. If the party does not return by a fixed date, you assume they have been lost, perhaps even divulged your location. You stay hidden. Donot send out another search party, and prepare for battle. Another party will not be sent out for at least five years. If the scouts do return, their findings will determine your next course of action.
Your scouts will discover a new world in which one of three scenarios prevails:
1. Zombies still roam the earth. Between those artificially preserved and those freezing with each winter, millions continue to exist. Although they may be infrequent, one per two square miles, they are still the planet’s dominant predator. Almost all humanity is gone. Those who survive remain in hiding.
2. Few undead remain. Decomposition and constant warfare have taken their toll. Perhaps every hundred or so miles, a lone zombie will be spotted. Humanity has begun to make a comeback. Pockets of survivors have banded together and are striving to rebuild society. This could take many forms, from a harmonious collective of law-abiding citizens to the chaotic, feudal society of barbarians and warlords. The latter would be reason enough to stay hidden. There is the possibility, no matter how slight, that all or some governments-in-exile will eventually show their faces. Armed with the remnants of military and police, equipped with stored technology and archived know-how, they attempt, successfully, to set humanity on a slow but steady course to re-establishing global dominance.
3. Nothing has survived. Before eventually rotting away, the living dead have cleaned out all vestiges of humanity. Refugees have been devoured. Bandits have either killed one another off or succumbed to ghoul attacks. Survivor camps have fallen to attack, disease, internal violence, or simple ennui. It is a silent world, devoid of zombie or human activities. Apart from the wind rustling in leaves, the surf breaking upon shore, and the chirps and calls of what wildlife remain, the earth has found an eerie peace not known for millions of years.
No matter what the human (or undead) situation, the animal kingdom will go through its own metamorphosis. Any creatures unable to escape will be devoured by the living dead. This will lead to the near-extinction of many species of grazing animals, the chief diet of large predators. Birds of prey will also face starvation, as will carrion birds (remember that even after a zombie is killed, the flesh remains poisonous). Even insects, depending upon their size and speed, may find themselves the target of roving zombies. It is difficult to say what forms of wildlife will inherit the earth. What can be said is that an undead world will have as much, if not a greater, impact on the global ecosystem as the last ice age.
Then What?
Post-apocalyptic fiction usually shows the survivors of a new age reclaiming their world in dramatic steps, such as retaking an entire city. While this makes for exciting imagery, especially in moving pictures, it does not represent a safe or efficient means of re-colonization. Instead of marching across the George Washington Bridge to repopulate Manhattan, a safer, smarter, more conservative stance will be to either expand your existing living space or migrate to a better, if still relatively isolated area. For example, if you have made your home on a small island, the best choice would be to land on a larger, previously inhabited island, clean out what zombies are left, and reclaim the abandoned structures as your new home. On land, the equivalent would be to migrate from, for example, the deep desert or frozen tundra to the nearest abandoned town. Worst-case survival manuals, as well as many historical texts, will be your best guide to a complete rebuilding. What they may not instruct you to do, and what you must do, is make sure that your new, more civilized home is secure! Remember: Yours is the only government, the only police force, the only army around. Safety will be your responsibility, and although the immediate danger may have passed, it must never be taken for granted. No matter what you will find, and no matter what challenges you will face, take heart in the knowledge that you have survived a catastrophe not seen since the extinction of the dinosaurs, a world ruled by the living dead.