Iala maritime buoyage system

Those on the port side of the channel should be passed on the port side of the vessel. Beaufort wind scale Force 1. Terms used on charts are:. A group of two or more marks or lights, in the same vertical plane such that the navigator can follow the leading line on the same bearing. However, due to changes in navigation practices and patterns, as well as innovations and technological developments, some enhancements to the MBS were needed.