Calculators

Six calculators and a chart of lights. Annual cost changes only berth and winter by country. Buy vs charter sets ownership annual against bareboat weeks. Antifouling turns the sizes you type into litres. Wetted surface and sail plan are separate figures. Survey cost follows length.

• Cost of ownership

  Berth and winter for Sweden, Denmark, Germany, and the Netherlands. Insurance stays the Swedish planning band - not a local premium. Maintenance stays Swedish too.

• Buy vs charter

  Ownership annual cost against bareboat weeks for the days you actually sail. Planning comparison, not a charter quote.

• Antifouling

  Underwater area and litres from waterline, beam, and draft. The 8 m²/L is a planning figure, not the tin.

• Wetted surface

  Denny - Mumford estimate. Not the paint area. A yard figure on the model page stays the yard figure.

• Sail plan

  Triangles from I, J, P, and E, and SA/D for two boats. Loaded displacement does not produce SA/D.

• Survey cost by length

  An indicative pre-purchase survey band by LOA. Not a surveyor's quote.

• Lights and sectors

  Nash Point gives two flashes in 15 seconds. White covers north and east, and the gap stays dark.