It's perfectly fine to operate with only one outboard engine; in fact, most people only have a single outboard fitted. However, you've probably seen craft fitted out with dual outboard motors, and plenty have even more hanging off the back.
There isn't a simple yes or no answer when it comes to dual outboards and single outboards, but it's well worth taking the advantages of dual outboards into account. Here are just three reasons you should consider fitting a second.
1. Added Power
Using dual outboard engines instead of a single outboard is usually going to bet you far more power, and that comes with more advantages than one.
For starters, it's pure fun at the helm of a more powerful boat. When you have dual outboards in the water, acceleration will be particularly strong, and your top speed should be higher. And it isn't all about the fun. Having that added power can offer the performance you need to get across harsher conditions – if you'll be crossing choppier waters or heading far out to sea, dual outboard power is going to be appreciated.
Even if speed isn't a factor, consider the fact that dual outboards will be able to carry more both behind the boat and in the boat. If you'll need to tow anything or accommodate lots of passengers, a dual motor setup might be for the best.
Just keep in mind that using multiple motors only adds more power if they exceed the output of a single. No point using two 150 hp engines in place of one 300 hp outboard.
2. Breakdown Protection
Another common reason for fitting dual outboards is enjoying stronger peace of mind. When you have one outboard engine, you're putting all your eggs in one basket. Breakdowns are relatively rare, but they can happen. If a single outboard goes, you'll need to get someone else to tow you in. If you have dual outboards, you can usually count on the second to get you home.
Again, this is going to be a more important concern if you're planning on heading further out.
3. Easier Manoeuvring
Finally, people tend to enjoy to added manoeuvrability offered by a dual outboard setup. Because engines have props revolving in opposite directions, you can turn on a dime and control the craft more easily at low speeds. This is great when you need to negotiate narrow channels, but you'll find it most useful when you need to dock.