Cigars and open water create a specific set of problems beyond just picking a shorter smoke. Humidity swings hard and fast on a boat, morning dew, midday sun, evening spray, and a cigar that was properly humidified at home can dry out faster on the water than it would sitting on a porch, since wind and direct sun both pull moisture out of the wrapper. If you're planning a full day on the water, bringing cigars in a small travel humidor rather than loose in a bag gives you a much better shot at a clean burn by the time you actually light up.

Salt air is the other factor worth knowing about, though it affects your gear more than the cigars themselves: metal cutters and torch lighters left exposed to salt spray corrode noticeably faster than the same tools used only on land, worth a quick rinse and dry after a day out rather than leaving them in a tackle box or cupholder.

On the smoking side, a milder, shorter cigar isn't just about time, it's also about not fighting the wind for an even burn on something that needs 90 minutes of steady attention. A quick, forgiving smoke tolerates an inconsistent breeze far better than a long, delicate one does.