COLREG Rule nine(a) is one of the rules that govern navigation in confined waters: “A vessel continuing together the class of the slender channel or fairway shall maintain as around to your outer Restrict with the channel or fairway which lies on her starboard aspect as is safe and practicable”. https://social-lyft.com/story5204124/new-step-by-step-map-for-security-guard-in-qatar