Faculty read this list closely, so here it is in full — real laboratory identifiers, in the order they are met.
Type your town — Burdwan, Kolkata, Katihar, anywhere — pick a time in GMT or LMT, and your sky opens: constellations in colour, the Sun, the Moon, the planets, and the horizons that frame them. Then the sextant, the corrections, the PZX triangle, and star sights worked to a fix.
13 laboratories →
Its own written paper, and the half of navigation you use every watch: the sailings on a Mercator chart whose stretched latitudes make a rhumb line straight, coastal fixes with the cocked hat opening as a compass error creeps in, the tide under the keel, and the current solved as one vector triangle drawn three ways.
6 laboratories →
The subject candidates most often fail, and the one a book helps least with — because the Rules are not a list to recite, they are a decision about a situation that is changing while you make it. Examined in the oral, as Function I.
3 laboratories →
A separate mandatory simulator course and a separate certificate. An operable display where every echo is the output of a detection calculation rather than a drawing — and the tolerance that lets a compliant ARPA be two miles wrong about CPA after one minute.
2 laboratories →
Read the weather, and route the ship around it. Why the Coriolis force makes wind blow ALONG the isobars, what DALR and SALR decide about the sky above you — and the one that matters most, the tropical revolving storm.
6 laboratories →
K, B, M and G — the four letters that keep her upright. From the shape of the hull to the storm, and on to the damaged ship: floodable length, the margin line, and the heavy-weather rolling that has no warning.
11 laboratories →
Stow her full, keep her safe, prove it with numbers — trade by trade. The general hold, the box trade, the bulk trade, the tanker and the gas carrier.
10 laboratories →
The night sky, explained by playing with it. For every curious mind — no exams at this door.
8 laboratories →
13 laboratories. The sky, the sextant, and the sums that follow — its own 200-mark paper.
| Lab | Title |
|---|---|
| ES-01 | Rotating Earth and coordinate systems |
| ES-06 | Celestial sphere and coordinate frames |
| ES-02 | Solar, apparent and mean solar day |
| ES-03 | Sidereal day and sidereal time |
| ES-04 | Lunar day, retardation, tides — the Earth–Moon–Sun machine |
| ES-08 | PZX — the navigation triangle made physical |
| OP-09 | Sextant optics and index error |
| OP-10 | The altitude-correction laboratory |
| ES-05 | The wandering stars — planets and the almanac |
| ES-07 | The fifty-seven — navigational stars, SHA, and Polaris |
| OP-15 | Star sights to a fix — the harvest |
| OP-12 | Compass error — azimuth and amplitude |
| OP-13 | The sums — latitude and longitude, step by step |
6 laboratories. Its own written paper: the chart, the fix, the tide and the current.
| Lab | Title |
|---|---|
| OP-14 | The sailings — rhumb lines & meridional parts |
| OP-17 | Coastal chartwork — bearings, fixes & distance off |
| OP-18 | Current, set & drift — the course to steer |
| OP-16 | Tides — the Moon's pull & the keel |
| OP-19 | The coastal passage plan |
| OP-20 | Blind pilotage & parallel indexing |
3 laboratories. Oral Function I — the subject candidates most often fail.
| Lab | Title |
|---|---|
| RR-01 | Rule of the Road — the encounter |
| RR-02 | Lights, shapes, and what they tell you |
| RR-03 | The encounter you drive |
2 laboratories. A separate simulator course, and a separate certificate.
| Lab | Title |
|---|---|
| RA-01 | Radar — the set, and what it can see |
| RA-02 | The plot, the ARPA, and what to believe |
6 laboratories. The newest subject, and the freshest work in the product.
| Lab | Title |
|---|---|
| MT-01 | Pressure, wind & the Coriolis force |
| MT-02 | Moisture, DALR & SALR — the stability of the air |
| MT-03 | The global circulation, monsoons & currents |
| MT-04 | Depressions, fronts & the weather they bring |
| MT-05 | Tropical revolving storms — track, recurvature & avoiding action |
| MT-06 | Weather routeing — the fastest track, not the shortest |
Be clear about the exam paper. Meteorology numericals are not in “the Fifty” yet — they are being written. The app says so plainly, and so do we.
11 laboratories. From the shape of the hull to the weather criterion.
| Lab | Title |
|---|---|
| ST-01 | The upright ship |
| ST-02 | Trim, loading & the marks |
| ST-03 | The curve at large angles |
| ST-04 | Bilging & the damaged ship |
| ST-05 | The draft survey |
| ST-06 | Dry-docking, grounding & the rolling test |
| ST-07 | Stresses in ships — shear force & bending moment |
| ST-08 | The weather criterion & heel in a turn |
| ST-09 | The ship's form — Simpson's rules & the coefficients |
| ST-10 | Subdivision and the damaged ship |
| ST-11 | Heavy weather — resonance, parametric roll and the danger zones |
10 laboratories. Stow her full, keep her safe, prove it with numbers.
| Lab | Title |
|---|---|
| CW-01 | The numbers of the hold |
| CW-02 | Care of the cargo — sweat, segregation & hatches |
| CW-03 | The stowage plan |
| CW-04 | Heavy lifts & the ship's gear |
| CW-05 | Tankers, grain & timber |
| CW-06 | Containers & reefer |
| CW-07 | Bulk cargoes & the IMSBC Code |
| CW-08 | Gas carriers — LNG and LPG |
| CW-09 | Tanker cargo operations |
| CW-10 | Bulk carriers — the loading sequence and the hull |
On the bench Two laboratories are designed and announced but not built yet: CW-08 Ro-Ro, project cargo and dangerous goods, and MT-07 ice, visibility and the polar passage. The app marks them the same way.
EX-01 — spherical trigonometry classes and “the Fifty”: forty navigation numericals plus ten more in stability and cargo. Every answer key is engine-proved, and every solution is shown line by line rather than as a final figure.
Inside the product, every laboratory carries a practice — not an approved assessment marker. We would rather volunteer that than have you find it.
A cadet or a serving officer starts free and is inside a laboratory in a minute. A college talks to us first, because enrolment and faculty tools need setting up properly.