You are welcome Ron.
Does your full/new moon question concern tides? Some great night scenery in places like Desolation Sound under a full moon that's not there on a new moon.
There are some big current
differences in the passes depending on whether we have neap or spring tides, notsomuch new/full moon. Seymour Narrows is the great northern gatekeeper around here, and currents in most northern passes are a similar pattern if not quite as strong. This is a useful link for you;
Current table for Seymour Narrows, British Columbia
The new moon currents in Seymour are a bit stronger than full moon, but the big difference is between those and the quarter moon phases. There is a much wider transit window at quarter moons. We keep our boat in Campbell River which is on Discovery Passage
- Seymour is in the "middle" of Discovery Passage
N of Campbell River. At the southern end of Discovery ( Cape Mudge), currents run at about 60% of Seymour, ie, 14kn at Seymour is approx 8+ at the Cape. You're not bucking that in a sailboat! Nor going with it in any likelihood!
The neap tides make life a lot easier for us leaving or returning to our home base - much less timing involved. Similarly they open up longer windows on most passes. They also make transiting some narrower channels between islands easier, especially here in the Discovery Islands. And there will be less wave action when you encounter wind against tide situations.
The reduced flow is also evident out in the Strait and can make a big difference to your north/south transit times. Currents in the Strait can be 1.5kn - I cruise at 6kn on the motor
so the current effect is +/- 25%.
I'm mostly familiar with Georgia
Strait N, but there are also currents among the southern islands on both sides of the border - Rosario Strait would be the Canadian current station off Sydney
- max about 3kn this month - accessible from the above link. Just enough to stall you, not keep you waiting in port.