boat

Hello everyone, I have a problem when I try to take off my UAV (Autel Evo II RTK) from a boat. The takeoff is impossible, and I receive the message "attitude initialization". How can I succeed in taking off ? Thank you for your help.

Hello again, Was boat mode removed from EVO1? If not available, how can I use the drone from a boat? I'm a marine scientist and need to be able to make it function from a boat. I've tried the last couple of times I've been onboard, the water has been as still as it gets and yet I can't get the...