Trearddur Bay Sailing Club

Race-day dashboard

Enter the planned start time and fleets to combine the six-hour Ravenspoint forecast with the 2026 Course Selector and sea-state guidance.

Fleets racing

Automatic validation

All race-day data is current

CURRENT
Live Ravenspoint stationupdated just nowObservation and automated quality checks valid
Six-hour local forecastupdated 11 minutes ago6 of 6 horizons available
Met Office inputsupdated 13 minutes agoForecast, observations and probabilistic feed valid
Marine sea-state guidanceupdated 4 minutes agoMatching wave record available for start time

All essential and supporting feeds passed their freshness, completeness and validity checks. The OOD must still verify observed conditions across the sailing area.

Recommendation for 07:10

Very short course set

Likely suitable. Based on the nearest forecast at 07:10.

Matrix column150°magnetic
Forecast wind13.8 ktSSE 153° true
Forecast gust21.7 ktLikely suitable
Sea state1.3 m5.4 s from SSW
Forecast valid07:10Fri 30 Oct

OOD course list

Recommended courses

View forecast chart and course routes
Oppy 21YNormal course
Feva3Normal course
Slow Misc12Normal course
Myth13Normal course
Misc13Normal course
1/2 Rater14RReverse course

Start line: G/W

Why this recommendation?

The 153 degree true forecast converts to approximately 154 degrees magnetic and uses the nearest 15 degree matrix column: 150 degrees.

Very short selected after applying the race-day sea-state and safety checks to the 13.8 kt mean wind and 21.7 kt gust forecast.

Operational adjustment: Modelled waves of 1.3 m trigger a very-short course.

Wind-based selection; shorten for poor visibility, rough sea or other race-management concerns.

Trearddur Bay Sailing Club

Sailing area

Fri 30 Oct, 07:10 · Wind SSE 153 deg T at 13.8 kt, gust 21.7 kt · Very short course, 150 deg magnetic
6 plotted courses
Trearddur Bay Sailing Club sailing area with the recommended fleet courses WIND FROM SSE / 153 deg T
Course 1YOppy 1 & 2Route diagram is not available in the supplied chart

Why: The 2026 selector assigns Course 1Y to Oppy 1 & 2 for this course length and magnetic-bearing column. Its route refers to page 27, which was not included in the supplied scan.

Course 3Feva4 rounds · Green Bay · start G/W

Why: The Very short matrix at 150 degrees magnetic assigns Course 3 to Feva. The normal published mark sequence applies. The route starts at the midpoint of the G/W line, uses Green Bay as its Bay Mark and finishes at the midpoint of the white line.

Course 12Slow Misc4 rounds · Outer Bay · start G/W

Why: The Very short matrix at 150 degrees magnetic assigns Course 12 to Slow Misc. The normal published mark sequence applies. The route starts at the midpoint of the G/W line, uses Outer Bay as its Bay Mark and finishes at the midpoint of the white line.

Course 13Myth3 rounds · Outer Bay · start G/W

Why: The Very short matrix at 150 degrees magnetic assigns Course 13 to Myth. The normal published mark sequence applies. The route starts at the midpoint of the G/W line, uses Outer Bay as its Bay Mark and finishes at the midpoint of the white line.

Course 13Misc3 rounds · Green Bay · start G/W

Why: The Very short matrix at 150 degrees magnetic assigns Course 13 to Misc. The normal published mark sequence applies. The route starts at the midpoint of the G/W line, uses Green Bay as its Bay Mark and finishes at the midpoint of the white line.

Course 14R1/2 Rater1.5 rounds · Inner Bay · start G/W

Why: The Very short matrix at 150 degrees magnetic assigns Course 14R to 1/2 Rater. The R suffix selects the published reverse mark sequence. The route starts at the midpoint of the G/W line, uses Inner Bay as its Bay Mark and finishes at the midpoint of the white line.

The blue arrow points downwind and its label states where the wind comes from. Each coloured route begins at the midpoint of its recommended start line, follows the published mark sequence and finishes on the white line. The OOD's instructions remain authoritative.