For UK boat owners

Scrubbing off Calendar

Monthly view • Harmonic predictions • Boat scrubbing day finder

Inner Dowsing Light tide times and boat scrubbing days

Inner Dowsing Light is a UK Hydrographic Office tide station in England at 53.317°, 0.583°. 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.

One morning in the next 7 days has a high water between 06:30 and 09:00, the ideal window to put a boat on the scrubbing grid or posts: Wed 11 Nov.

Next 7 days of tidal events at Inner Dowsing Light (UK local time, heights in metres above Chart Datum)
DayTidal eventsScrubbing morning?
Thu 5 NovHW 02:26 (5.7 m) LW 09:10 (1.5 m) HW 15:21 (5.7 m) LW 21:24 (2.2 m)—
Fri 6 NovHW 03:22 (6.0 m) LW 10:01 (1.3 m) HW 16:07 (6.0 m) LW 22:11 (1.9 m)—
Sat 7 NovHW 04:08 (6.2 m) LW 10:46 (1.3 m) HW 16:47 (6.1 m) LW 22:52 (1.7 m)—
Sun 8 NovHW 04:50 (6.3 m) LW 11:25 (1.3 m) HW 17:23 (6.2 m) LW 23:30 (1.6 m)—
Mon 9 NovHW 05:28 (6.3 m) LW 12:00 (1.4 m) HW 17:55 (6.2 m)—
Tue 10 NovLW 00:05 (1.6 m) HW 06:04 (6.2 m) LW 12:30 (1.6 m) HW 18:25 (6.2 m)—
Wed 11 NovLW 00:38 (1.7 m) HW 06:38 (6.1 m) LW 12:58 (1.7 m) HW 18:52 (6.1 m)✅ Yes

Open the Inner Dowsing Light monthly calendar

Planning a scrub at Inner Dowsing Light

  • 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.