Comment by pmul

On 3, Traffic Separation Schemes (TSS) will be making things look tidier (and safer) for many of the more organized flows.

In a TSS, you have to drive on the right, and if you're crossing one, your heading (not your track) must be as close to 90 degrees, to minimize your exposure time. When you're sailing this can be a big pain. The anti-collision rules are altered in a TSS.