In a RAM within a Traffic Separation Scheme (TSS), can a vessel cross at 70 degrees?

• A. No exemptions exist
• B. Only Rule 10 J exemption
• C. Yes, if exempt under Rule 10 K or J
• D. Only Rule 10 K exemption

Answer: (C)

The rule in a Traffic Separation Scheme expects vessels to cross the traffic lanes as nearly as practicable at right angles to the general flow of traffic. That keeps disruption and risk to a minimum. There are, however, explicit exemptions in Rule 10 that allow crossing at non-perpendicular angles when necessary for safe navigation or operational reasons. If a vessel has a valid exemption under those provisions, crossing at a steep angle like 70 degrees is permitted. Without such an exemption, a 70-degree crossing would not be allowed. So the best answer is that crossing at 70 degrees is possible only if the vessel is exempt under Rule 10J or Rule 10K.