Unfortunately, the unsinkable boat has yet to be made. Even boats that are designed for underwater (submarines) are capable of sinking, with catastrophic results. That said, some boats are certainly harder to sink than others. And in the pantheon of difficult to sink watercraft the modern inflatable boat holds its own against the competition. There’s one big reason for this: multiple air chambers. Multiple air chambers are without a doubt one of the most appealing features of the inflatable boat.\r