We’d like to hear from you. Email [email protected] and we aim to reply within a few business days.
Corrections and route problems
If a distance, time or fuel figure looks wrong, or a route crosses land, please include the page, the two places you selected and the speed you used. That lets us reproduce the problem and fix it.
Ideas and feedback
Missing a calculator, a port or a feature you need for trip planning? Tell us what you are trying to do. Suggestions from boaters shape what we build next.
Advertising and partnerships
We consider advertising and partnership proposals from marine businesses whose products or services are relevant to boaters. Email the same address with “Partnership” in the subject line and a short description of your offer.
BoatCalculators provides estimates for trip planning only, not for navigation. For emergencies on the water in the United States, call 911 or contact the U.S. Coast Guard on VHF channel 16.