is0ph: Note about energy use: using wedges and manual hydraulic levers, a team of 3 people can raise a 90tons boat up 10cm in less than an hour.
vendredi 8 mars 2013 à 09:36is0ph: Note about energy use: using wedges and manual hydraulic levers, a team of 3 people can raise a 90tons boat up 10cm in less than an hour.