So You Want to Plan a Voyage Round The World
I used to think people just drifted around the Pacific on sailboats and somehow made it work. Turns out it is mostly logistics, stubbornness, and a lot of paperwork you never expected. I did it a few years back with a 42-foot ketch, and the first real headache was not finding wind in the right place. It was getting the boat legally moved from point A to point B without someone in customs asking questions you did not know existed. Planning one requires understanding two separate systems: the nautical route and the bureaucratic route. Most beginners skip the second one until a harbor master in Fiji denies them entry because a transit visa stamp was missing from a crew member passport from three ports ago. I learned that the hard way. The fix was simple but expensive. We spent two days at a marina in Suva while I sorted out the documentation with a local maritime agent. That trip cost me roughly eight hundred dollars and a full week of delay. Not the end of the world, but it changes your timeline significantly. The core of any global trip comes down to routing, provisioning, and knowing when to stop. Routing is where most people waste money. You can look at weather windows online and pick a crossing that saves twelve hours but costs you three hundred dollars in extra fuel because you fight a head current. I started using a combination of Predictwind and a manual check of the OceanPredict model from the UK Met Office. The free data from Predictwind is decent for general planning, but the hourly buoy forecasts from OceanPredict give you better resolution for the mid-ocean passages. I cross-referenced both before committing to a departure window. Usually cuts my planning time from four hours down to about forty-five minutes per crossing.
Provisioning is less about food volume and more about shelf life and water. Fresh vegetables last about ten days in tropical heat before they turn into compost inside your lockers. I switched to root vegetables and cabbage for the longer stretches, and started a hydroponic lettuce system using recycled containers and an LED grow light powered off the house bank. It sounds absurd until you realize you have not had fresh greens in six weeks and morale matters more than you expect. The LED setup draws about twelve watts and adds roughly fifty grams of leafy greens per week. Not much, but enough to keep people from arguing over dinner. Crew management is another area people underestimate. A boat that size with four people onboard needs clear rules about watch rotation and shared responsibilities. I wrote out a simple rotation schedule and posted it in the galley. Everyone signs it. The rule is no one works more than six hours of sea duty in a twenty-four-hour period, and anyone can call a timeout if they feel unsafe. I have seen crews push through exhaustion and then make catastrophic decisions at 3 AM in heavy weather. The timeout rule has saved me twice. Once when I realized I was too tired to pilot through a reef channel, and once when a crewmate noticed a loose halyard that would have snapped and taken an eye out during a gybe. Navigation equipment should be redundant but not complicated. I run a dual GPS setup with one unit feeding chartplotter data and another dedicated to radar overlay and AIS. The radar shows ships that are not broadcasting AIS, which matters more in busy shipping lanes than you think. Off the coast of Vietnam, near the busy waterway approaching Singapore, I spotted a freighter on radar that was not showing up on AIS. It was a fishing vessel with a disabled transponder. We altered course by two miles and avoided a close encounter that would have been unpleasant. If I had only relied on AIS, I would have sailed right into that situation.
Fuel strategy is where budgets die. Most people miscalculate consumption because they plan for engine-off sailing but forget that auxiliary engines still run for charging, refrigeration, and watermaker operation. I sized my tanks based on a realistic daily consumption of forty liters for the generator and ancillary systems, plus ten liters per hour of engine use during crossings. That gave me a comfortable range of about three thousand nautical miles with a reserve buffer. Anything longer than that requires either frequent refueling stops or serious tank capacity, which brings its own problems with weight and stability. Weather routing software has gotten very good, but no software replaced the value of experience reading the sky. I learned to spot developing storms by watching cloud formations rather than trusting a forecast model completely. There is a type of cumulonimbus that builds fast in the tropics and can produce squalls within twenty minutes. The models usually pick those up, but sometimes they lag. Being able to see them coming and dropping sail early makes the difference between a rough hour and a broken mast.
Get the Full Details

Practical Steps That Actually Matter
Start by picking a route that matches your experience level. The traditional circle around Cape Horn is dramatic but dangerous for anyone without serious offshore experience. A more realistic first attempt goes through the Caribbean, down the east coast of South America, across the Atlantic to West Africa, up through the Mediterranean, and then onward. This takes longer but exposes you to manageable conditions and well-developed infrastructure for repairs and supplies. Get your boat surveyed before you commit. A proper hull inspection costs about fifteen hundred dollars and can reveal structural issues that would have become emergencies mid-ocean. I found micro-cracking in the rudder stock on my first survey. The repair took a week and cost four thousand dollars. Doing it in a marina in Portugal is infinitely better than dealing with it three hundred miles offshore. Documentation is where people get stuck. You need a valid flag state registration, CE certification or equivalent depending on your vessel class, and insurance that covers global waters. Standard European marine policies often exclude the Pacific and parts of Southeast Asia. My insurer added a Pacific rider that cost an extra twenty percent on the premium but covered me from New Zealand through to Mexico. Without it, a single incident in Fijian waters would have been completely uninsured.
Crew selection matters more than most people admit. I tried sailing with a friend who was enthusiastic but had never handled a boat in heavy weather. It lasted three weeks before the tension became unmanageable. I switched to hiring a professional offshore skipper for the most demanding passages and keeping friends on for the calmer sections. The skipper cost about two thousand dollars for the Pacific crossing but prevented what could have been a disastrous situation. Worth every penny. Safety gear needs to be inspected before every departure, not just once at the start. I use a checklist based on the IMO SOLAS requirements for recreational vessels, adapted for our specific route. It includes life raft servicing dates, EPIRB battery expiration, flares expiration, and harness and lanyard inspection. The checklist takes about twenty minutes and has caught three potential failures before they became emergencies. Communication is another budget item that people underfund. I use a combination of Iridium satellite phone, Starlink Marine for near-shore high-speed internet, and a VHF with DSC for local communications. The Iridium phone costs about ninety dollars per month for the data plan and handles emergencies when you are out of cell range. Starlink is about two hundred and fifty dollars per month and replaces the need for expensive shore-based internet purchases at marinas. Together they cost roughly three hundred and forty dollars monthly but eliminate the stress of trying to find Wi-Fi in remote ports.
One thing nobody tells you about long passages is the psychological toll. Weeks of confinement, limited social interaction, and constant low-grade stress wear on people differently. I noticed that after about six weeks at sea, small annoyances escalated into real conflicts. The solution was scheduling mandatory shore time every ten to fourteen days, even if it meant waiting around at a port for a day or two. Getting off the boat and walking on solid ground reset everyone's temperament better than anything else we tried. Finally, budget realistically. A well-equipped 42-foot boat doing a circumnavigation with a professional skipper for the tough passages and crew rotating in and out typically costs between eighty thousand and one hundred and twenty thousand dollars for a twelve to eighteen-month trip. This includes fuel, insurance, docking fees, maintenance, food, and communication. Cheaper trips exist but usually involve compromises that show up as problems later. Spending the money upfront on proper preparation and safety equipment pays for itself in avoided emergencies. If you are serious about this, start with a shorter offshore passage first. Two weeks in the Mediterranean or a crossing of the Bay of Biscay will tell you more about your readiness than any amount of reading. I regret spending six months researching before ever taking my boat beyond coastal waters. The research was useful, but the actual experience of handling the boat in real conditions taught me everything the books did not.

What This Approach Misses
The method I described assumes you have a seaworthy vessel, adequate financial resources, and the physical health to handle demanding conditions. It does not account for situations where political instability closes routes, where insurance becomes unavailable in certain regions, or where personal health issues force abandonment of the plan mid-journey. These happen more often than people discuss publicly. I know two captains who had to terminate their voyages due to family medical emergencies and another who rerouted around a conflict zone that appeared after they were already in the Indian Ocean. Having a contingency plan that includes emergency return passages and accessible evacuation routes is essential, even if you hope you never use it.