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Running a ship’s kitty: settle crew expenses fairly

NauticCalc on iPhone — matching the topic of this article.

NauticCalc app screenshot

Why a ship’s kitty avoids arguments

On a trip one person pays for the diesel, another for the big grocery run, someone else for the harbour fee. Without a system, by the end no one remembers who laid out what — and a lovely trip turns into a tedious reckoning. A ship’s kitty records the expenses and settles up fairly at the end.

Two models

  • Shared kitty: everyone pays in an amount at the start, expenses come out of the kitty. At the end the remainder is split. Simple, but you have to front the money.
  • Individual settlement: everyone pays whatever comes up, and it is all reconciled at the end. No advance needed, but it takes clean record-keeping.

Both work — what matters is that every expense is recorded with amount, payer and (optionally) participants.

Working out shares correctly

Not every expense splits the same way:

  • Evenly: diesel, harbour, shared meals → across everyone.
  • Subgroup: only three used the marina sauna → just those three.
  • Individually: the beer for one person → not split at all.

At the end of the trip each person has a simple balance: paid in/laid out minus share = gets back or owes. This is exactly the reckoning the Ship’s Kitty takes off your hands — and because it runs offline, you need no signal for it.

Record cleanly — right away, not later

The most common mistake is trying to enter expenses “later”. After a week the receipts and the memory are gone. Better: record the moment you pay, amount and payer, done. That fits well with the habit of keeping the Logbook anyway.

Common mistakes

  • Putting off expenses and guessing later.
  • Not noting participants, even though not everyone was involved.
  • Mixing cash and card without recording who actually paid.
  • Rounding at the end that does not add up — better to record it exactly.

Conclusion

A ship’s kitty is not about mistrust but convenience: it keeps track of small amounts so that no one has to recalculate or argue at the end. Whether a shared kitty or individual settlement — whoever records every expense straight away with payer and share splits it fairly in minutes at the end of the trip.

Read more: Ship’s Kitty · Logbook · Download the app