Boasun, sailingdog, and gc111, thanks for your replies.
Boasun, regarding your suggestion to read the Tidal Current Tables, not the Tide Tables, I also have questions about this. (I am not new to sailing, but new to cruising, and sooo interested to learn.)
A minor detail is that you should be using the Tidal Current Tables and not the Tide Tables. Tidal Current and the Tides are many times out of phase due to the topography of the land masses in the area.
...Using Eldridge, I used the Tidal Current Tables to scope out the timing with Woods Hole, Mass, and I really like the way this is presented in illustration format, in combination with the Tide Tables. So the first thing I did was look for the same thing for the Cape Cod Canal. However, this doesn't appear to be included in Eldridge, so then I went to the Tide Tables. In order to replicate (in general terms, not specific depending on the topography) kind of information shown in the Current Charts, my thought was that one uses the Rule of Twelveths for this. (Again note that I'm still very new to this, so I'm doing a lot of reading, researching, and forum'ing
and trying to piece all of this together.) I may just have not seen the Tidal Current Table for the Cape Cod Canal. Where do I find this?
Though I used the CapeCodCanal as the example. . . . In general, regarding the Rule of Twelveths, sailingdog cleanly describes about how the Rule applies to tidal height. Does it also apply to current? (I think yes). If so, when I multiply 1/12 (for the first hour) times the maximum current [(1/12)*5 knots==0.416) is the result (0.416) (option#1) a percentage of the total maximum current? In other words, does one then need to take 0.416 and multiply that times 5 to get the actual current speed at 1 hour past the current change, which would be 2knots.
or option#2: "0.416" is the actual current speed; at the first hour the current speed is 0.4 knots?
I think it's option#1, but i'm not positive (again, newbie), so any feedback is welcome.