Free tools
Free tools for people at sea and ashore
Eleven tools, free to use on the open web, with no account needed. Each one does a job a colleague does for you every day inside Naavra, the maritime autopilot. See the full answer on screen; keep it, share it or watch it with an email address.
DA checker
Paste a disbursement account. See which lines to query, and on what basis.
For operators and post-fixture desks · 3 accounts a day on this device
OpenCII and EU ETS calculators
Your carbon intensity rating and your EU ETS allowance cost, with every factor named.
For commercial desks, operators and superintendents · 100 runs a day
OpenDredge production calculator
Cubic metres per shift and fuel per cubic metre, with every assumption shown.
For dredging superintendents and estimators · 100 runs a day
OpenCrew wallet and sea time
Your papers for life, and your sea time added up for the next licence.
For seafarers · Free for seafarers, forever
OpenVoice-to-report
Say what is broken, in your language. Get a clean English defect report.
For officers and ratings on board · 5 notes a day on this device, 3 minutes each
OpenChat with a manual
Upload an equipment manual and ask it questions. Every answer cites its page.
For chief and second engineers · 1 manual a day, 20 questions
OpenShip's certificate link
One link that answers every agent, terminal and inspector, always current.
For masters and superintendents · Free for your first vessel
OpenNameplate to spares
Photograph a nameplate. Get the maker, the model and where its spares come from.
For chief engineers and purchasers · 10 photos a day
OpenReady Score self-check
See the gaps a buyer, a charterer or a Port State officer would see, before they do.
For owners and superintendents · 5 checks a day
OpenPort State detention-risk check
How Paris MoU, Tokyo MoU and the US Coast Guard are likely to see your ship, and what they tend to look at.
For masters and superintendents · 20 checks a day
OpenSIRE 2.0 and OVID practice
Practise the questions for your role, chapter by chapter, and mark yourself.
For officers on tankers and offshore vessels · 50 answers a day
OpenOur promise
What happens to what you give a free tool
No puzzles to prove you are human. Fair-use limits and a small background check in your browser keep the tools free for everyone.
See your own fleet in Naavra
A 30-minute walk-through on your ships, your ports and your people. We bring the synthetic fleet; you bring the questions.