The size of the boat needed depends on a few factors including the number of people on board, the length of your trip, and the type of sailing conditions you'll encounter. Smaller boats such as catamarans or dinghies can be ideal for beginners, as they are easier to handle and navigate. However, if you plan to sail with a group of friends or family, a larger vessel may be necessary. It's important to choose a seaworthy, safe, and comfortable vessel for your journey.