For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

ST. MARY'S (SCAPA FLOW) tide times and boat scrubbing days

ST. MARY'S (SCAPA FLOW) is a UK Hydrographic Office tide station in Scotland at 58.900°, -2.917°. This page lists the next 7 days of official Admiralty high and low water predictions and flags the mornings when high water falls in the 06:30 to 09:00 scrubbing window. The interactive calendar extends this to a full month with harmonic predictions.

4 mornings in the next 7 days have a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Thu 5 Nov, Fri 6 Nov, Sat 7 Nov, Sun 8 Nov.

Next 7 days of tidal events at ST. MARY'S (SCAPA FLOW) (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovLW 00:27 (0.8 m) HW 06:45 (2.9 m) LW 12:42 (1.4 m) HW 18:48 (3.1 m)✅ Yes
Fri 6 NovLW 01:13 (0.7 m) HW 07:32 (3.0 m) LW 13:23 (1.2 m) HW 19:39 (3.2 m)✅ Yes
Sat 7 NovLW 01:50 (0.7 m) HW 08:12 (3.1 m) LW 14:00 (1.0 m) HW 20:23 (3.3 m)✅ Yes
Sun 8 NovLW 02:24 (0.7 m) HW 08:49 (3.2 m) LW 14:36 (0.9 m) HW 21:03 (3.3 m)✅ Yes
Mon 9 NovLW 02:56 (0.8 m) HW 09:23 (3.2 m) LW 15:11 (0.9 m) HW 21:41 (3.3 m)—
Tue 10 NovLW 03:29 (0.8 m) HW 09:56 (3.3 m) LW 15:46 (0.9 m) HW 22:17 (3.2 m)—
Wed 11 NovLW 04:01 (0.9 m) HW 10:27 (3.2 m) LW 16:21 (0.9 m) HW 22:52 (3.1 m)—

Open the ST. MARY'S (SCAPA FLOW) monthly calendar

Planning a scrub at ST. MARY'S (SCAPA FLOW)

  • Aim for a high water between 06:30 and 09:00 so the boat dries out through the morning and refloats on the afternoon flood.
  • Spring tides (around new and full moon) give a larger range and more working time on the grid.
  • Check the height of high water against the depth of your grid or posts; neap tides may not float a deep-keeled yacht on.
  • Predictions beyond 7 days are harmonic estimates. Confirm dates against official tide tables before committing a crane or grid booking.