The object should be in the ShipDrawings PermissionGroup.
There is a Permission Group for Ship Drawings objects. This object should be in the Ship Drawings Permission Group, but it is not.
The object may have been created prior to the creation of the Ship Drawings Permission Group.
What You Should Do
Open the model.
Run the Clean Database custom command.
Select the object in the list of objects.
Click Clean Now to place the object in the Ship Drawings Permission Group.