For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Corran tide times and boat scrubbing days

Corran is a UK Hydrographic Office tide station in Scotland at 56.717°, -5.233°. 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.

5 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: Fri 11 Sept, Sat 12 Sept, Sun 13 Sept, Mon 14 Sept, Tue 15 Sept.

Next 7 days of tidal events at Corran (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Fri 11 SeptHW 06:56 (4.3 m) LW 12:54 (0.5 m) HW 19:01 (4.6 m)✅ Yes
Sat 12 SeptLW 01:32 (0.7 m) HW 07:26 (4.4 m) LW 13:32 (0.4 m) HW 19:33 (4.6 m)✅ Yes
Sun 13 SeptLW 02:05 (0.7 m) HW 07:56 (4.4 m) LW 14:09 (0.5 m) HW 20:03 (4.6 m)✅ Yes
Mon 14 SeptLW 02:37 (0.8 m) HW 08:25 (4.3 m) LW 14:43 (0.7 m) HW 20:32 (4.4 m)✅ Yes
Tue 15 SeptLW 03:08 (1.0 m) HW 08:52 (4.2 m) LW 15:16 (0.9 m) HW 21:00 (4.1 m)✅ Yes
Wed 16 SeptLW 03:40 (1.2 m) HW 09:20 (4.0 m) LW 15:50 (1.2 m) HW 21:28 (3.9 m)
Thu 17 SeptLW 04:17 (1.4 m) HW 09:53 (3.8 m) LW 16:29 (1.5 m) HW 21:57 (3.6 m)

Open the Corran monthly calendar

Planning a scrub at Corran

  • 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.