Generally we have fewer problems with seasickness than regular boats and large catamarans because of the open air, fast-moving nature of our vessels. However, while our vessels will affect far fewer guests, there are still people who are strongly susceptible and will become seasick no matter what. If you decide to take an over-the-counter medication, we recommend taking the recommended dose the night before your trip and the morning of your trip. We do not offer refunds due to sea sickness.