Inshore Course Predictor

1 · Inputs

GPX Marks Polar File GWD degT (FROM) GWS kn Use Polar Use Current Model Mag Variation

Manual targets

Upwind TWA Reaching TWA Downwind TWA Upwind BSP Reaching BSP Downwind BSP

4 · Build Course

Picked point

Lat Lon

Tip: click any mark on the chart to add it to the course, or use Pick on Chart to capture a custom point.

6 · Phone GPS

GPS not running. Requires HTTPS and location permission.

7 · Current Overlay

Solent Currents overlay not loaded yet.

Current display time

8 · Prediction Table

Leg	Dist	Brg °T	Mode	Target	Port	Stbd	Total	Sim Port	Sim Stbd	Sim Total	CTS Port/Stbd

2 · Tide / Current Setup

Use manual current inputs, or use Solent Currents aligned with Portsmouth tide times/heights.

Portsmouth HW time from EasyTide Portsmouth HW Height m Portsmouth LW Height m Tide Strength Factor Scale Current Rate % Race start time Time step seconds Minimum tack/gybe duration minutes Tack/gybe penalty seconds

Manual Current

Current set °T (TO) Current drift kn

Parse Data

Manual current mode: use Current set/drift in Inputs.

Reference	Value
Portsmouth HW	Not set
Portsmouth range	Not set
Tide strength	1.00 × mean

3 · Loaded Polar

No polar loaded

Polar Factor %

Classic polar view: TWA is plotted as port/starboard angle from upwind, BSP is radial distance, and each curve is one TWS row.