The title says it all, Your ship is probably going really slow because there is a missing plate that was apart of the blueprint or another one just doesnt have a million bolts to secure it. There is a setting located in Game menu > Settings > Gameplay > Ships & Safe Zones > Disable safe mode of hosted ships
Turning this off will allow your ship to go at full speed with the chance of a few improperly secured plates, or much more valuable items to come unsecured and fly out in which direction they please, so if you think there may be something wrong, look at the blueprints and use the durability tool to double check for bolted items.
Turning this off will allow your ship to go at full speed with the chance of a few improperly secured plates, or much more valuable items to come unsecured and fly out in which direction they please, so if you think there may be something wrong, look at the blueprints and use the durability tool to double check for bolted items.