http://www.svensons.com/boat/
http://www.walterturnsek.t-com.hr/index.html
http://ia600409.us.archive.org/11/items/fishingboatdesig034778mbp/fishingboatdesig034778mbp.pdf
http://oceancolor.gsfc.nasa.gov/staff/gene/IMAGES/Gulbrandsen_Fishing_Boat_Designs.pdf