Dokkum, Klaas Van. The colregs guide: rules of the road for mariners / Klaas Van Dokkum. - 5th ed. - Netherlands: Dokmar Maritime Publishers, c2016. - 192 pages : ill., col. ; 31 cm. ISBN: 9789071500282 Subjects--Topical Terms: Colregs--guide. LC Class. No.: CIR VK 371 / D65 2014