In addition, the role, scope of practice, and prescribing authorization of a nurse midwife will vary depending on licensure and where they practice. Certified Nurse Midwife responsibilities may include: 1  Primary and specialty care for women.
Messages: 357. Slack tide is when the current goes slack between tide changes and slack usually last 30min to an hour after peak high tide or peak low tide(hence high slack or low slack). Feb 27, 2008.
These tides usually reach about the same level at high and low tides each day, and have a tidal period of 12 hours, 25 minutes. The third pattern of tide has two high and two low tides per day, but the tides reach different high and low levels during each daily rhythm.