Some ship building items are impossible to create with 0 skill, but at least [[seat]] and [[hull plank]] should be available to get the initial 1 skill.
If you're making your first ever boat it is recommended to not make the keels as the first item. You should start by making [[hull plank]], [[tenon]], [[peg]], and [[belaying pin]]. Then you make some of the more complicated pieces like [[oar]] or [[seat]], and you improve those as far as you can to get your [[ship building]] skill up. Once your skill has reached 10-15, you may create the [[keel section|keel sections]] with decent success rate.
'''Weight in parentheses is raw material weight required to create.'''