Half-tide doesn’t sound right to me, slack-tide is something else entirely, my google-fu has failed me.
Tide
I don’t claim expertise, but after living in four different coastal areas of three different bodies of water, I’ve not heard one. It’s always just “6 hours to high tide” or something like that, they want to know time to high/low point so people can plan accordingly.
Sea level?
“Stand of the tide” is offered by Wikipedia: https://en.wikipedia.org/wiki/Slack_tide?wprov=sfti1#Misconceptions
stand of the tide’, which is when tide levels ‘stand’ at a maximum or minimum
Isn’t that when it’s just standing at high or low tide?
Some googling leads me to find it’s either “ebb tide” or “flood tide” depending on whether it’s halfway falling or halfway rising, respectively. I’m not sure if this is exactly half way though, some diagrams make it appear that any time in between in either one of these, not necessarily half way exactly.
We use them as just the tide flow here.
I wouldn’t be taken aback if someone said half tide, and is probably what I would use if I was asked on the spot
Mid tide?
