Aeolus

Cape Dory 27 · hull lofted from Carl Alberg's lines · solar layout and shade planner

Estimated harvest

Installed

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Per day

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Lost to shade

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Motoring it buys

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Clear-sky sun for the date and place, times the sky setting, less 15% for heat, wiring and controller. Use it to compare layouts, not to size the battery bank to the last watt.

Sun and place

Where

Date

Boat heading

Bow points to 0° (view only; harvest averages all headings)

Sky

Cruise power for the motoring figure (kW)

Panels

Deck measurements

The hull, sheer and keel come from the lines drawing. Deck structures are estimated from your photos and the published rig. Replace any number with a tape measurement and everything updates. Distances are in feet.

About this model

From the lines drawing: hull shape (8 waterlines, 6 buttocks), sheer, deck crown, stem, keel, rudder and raked transom. The lofted hull matches every drawn buttock to within about a quarter inch.
From sailboatdata: rig (I 34', J 11', P 29.75', E 11.25'), mast height 38.5' above the waterline.
From your photos and notes, estimated: cabin trunk with three portholes a side, forward hatch and cowl vent ahead of the mast, windlass and bow roller, bimini, radar dome, boom height, lifelines.
Planned, not built yet: the hard dodger with clear front and side windows, the stern arch and its fold-out wings, and the panels on the lifelines, forward hatch and foredeck. Their sizes are starting points; change them under Deck measurements.
Shade math: each panel is sampled at many points every 15 minutes. Thin wires cast only a soft, partial shadow from far away, and the model accounts for that. A shaded cell drags down its whole string, so shaded area counts double against output.