Heel Meter — your phone as an inclinometer.
• Read the offside drafts when you cannot see the marks. Lay the phone flat, take a reading, and the app works out the draft you could not read.
• Live heel and trim, with freeze-and-set.
• Mark spacings off the body plan, drawn as hull sections.
Also new
• Keel plate thickness correction in the vessel profile — every lookup taken from the top of the keel.
• Hull deflection on the survey: hog or sag, and how much.