I know, I know. You don't have time to fit in a workout - you're too busy.
If you can't fit in a workout, or if sailing is your workout, then that's fine. I'm not your mother, and I'm not going to force you to exercise more.
But...and there is a but...getting fitter is one of the easiest ways to get faster on the water. So here's a handy 10-minute arm workout that might help you fit some exercise in. I like it because it works your arms from a range of angles (just like sailing does), it works your core which is good for protecting you from injury (especially your back), and it doesn't take much time
It even uses something called "The Boat Pose" so it must be good for sailors. Right?
Don't just do this routine - you'll just get good at doing certain movements well - but do use it if you're short on time, or want to start building fitness into your daily life.
The routine does require some dumbbells - these are similar to the one's I use at home. If you are buying dumbbells then I recommend getting them delivered to your house - it's a lot handier than having to carry them around yourself.
Make sure you focus on form - using incorrect form with these exercises will cause you problems. If you're only starting a fitness program then go for something more for beginners, like this Basic Foundation Fitness routine.
Also, with things like bicep curls I tend to alternate between the normal bicep curl grip as shown in the 'Plank with single arm bicep curl' exercise, and with the hammer bicep curl grip, because it replicates pulling on a sheet or tiller extension more accurately. But that's just me.
Remember, I'm not a gym instructor, and you're the boss of your body. If you are getting back into fitness, or making changes to your routine, then you should contact a medical professional first - it is important to get things right and not do more harm than good. The last thing you need is to get injured as the sailing season kicks off again.