OCTCO/OCTF exit exam MCQs — Oil and Chemical Tanker Cargo Operations
Free multiple-choice practice for the Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF) exit exam — an STCW modular course, with the questions here set on the DG Shipping (India) exam pattern. Every question carries the reason behind its answer, and the whole bank is reshuffled between the sets whenever you ask — so you can never pass by remembering that the right one was third from the top.
Question of the day · OCTCO/OCTF
How it works
- Pick a setEach set is a slice of the course bank, cut to the same size as the real paper. Start anywhere — nothing is locked.
- Answer the questionsTap an option and the answer is marked straight away, with the explanation shown there and then. You are revising while you attempt, not after.
- See where you standYour score is put against the real 15/30 pass mark (50%), and your best result is kept on each set card below.
- Reshuffle and go againTap Reshuffle sets to re-deal every question in the bank into new sets. The sets keep their sizes; their contents change completely, so the second run through is genuinely a second run.
- Phone and PCSign in with the same cryosim.com account on each device and your best score shows on every set card there. Signed out, scores stay in this browser only.
New to the exit exam? Read the DG Shipping exit exam guide: pattern, pass mark and syllabus by course.
Courses
Advanced Fire Fighting
Commanding a fire party rather than holding a hose: boundary cooling, fixed CO2 release and its shutdowns, A/B class divisions and the fire control plan.
Advanced Training for Ships subject to the IGF Code
The gas-fuelled ship in depth — Type C fuel tanks and their hydrostatic test, double-walled gas piping and annular-space leak detection, nitrogen and inerting lines, and the ESD chain protecting the machinery.
Basic Training for Ships subject to the IGF Code
The entry-level gas-fuel bank: what methane, propane and VCM actually are, how a bunkering system has to be arranged, MARVS and the IGF Code vocabulary, and why BLEVE is the accident to understand.
Advanced Training for Chemical Tanker Cargo Operations
Handling hazardous chemical cargoes to IBC Code rules — pollution categories, wall wash and tank cleanliness, incompatible stowage, and MARPOL Annex II slop discharge under the P&A Manual.
Elementary First Aid
The first ten minutes at a casualty: basic life support and CPR, stopping severe bleeding, recognising shock, and moving an injured shipmate without making it worse.
Fire Prevention & Fire Fighting
Where fire fighting starts — the fire tetrahedron and the classes of fire, choosing between water, CO2, DCP and foam, fixed installations, and the ship emergency organisation that puts them to work.
Advanced Training for Liquefied Gas Tanker Cargo Operations
LNG and LPG cargo work at officer level: cargo thermodynamics, boil-off and reliquefaction plant, IGC Code containment, the ESD link and deck water curtain, and custody transfer measurement.
General Ship Knowledge
The GP rating core: names of the parts of a ship, ropes and knots, working anchors and moorings, hatch covers and load lines, IALA buoyage and watchkeeping duties.
High Voltage Safety Officer & Switchgear Operations
Above 1000 V nothing is touched on trust: arc flash boundaries, permit to work and sanction to test, proving dead and applying earths, interlocks, and the vacuum breakers and relays doing the switching.
Liquefied Gas Tanker Cargo Operations
Cryogenic containment, reliquefaction, CTMS custody transfer, IGC/IGF safety and emergency STS — the full advanced gas carrier bank.
Medical Care Course on Board Ship
The officer who is the ship doctor: examining a patient with the kit actually carried, giving controlled drugs correctly, and building a report a shore doctor can act on over the radio.
Marine Engineering Knowledge
Engine room fundamentals for ratings: how two and four stroke diesels work, the auxiliaries around them, workshop tools and practice, boilers, and what a watch actually involves.
Medical First Aid
A step past EFA — body structure and function, spinal and skeletal injuries, the medicine chest and basic pharmacology, toxicological hazards, and working with radio medical advice.
Oil and Chemical Tanker Cargo Operations
The combined oil and chemical tanker familiarisation bank: inert gas and the 8% oxygen limit, crude oil washing, ODMCS discharge limits, static electricity control and MARPOL Annex I/II.
Proficiency in Survival Craft and Rescue Boats
Taking charge of a survival craft: launching gear and on-load release hooks, lifeboat and liferaft equipment, the painter and sea painter, SART and EPIRB, and running a search and rescue.
Passenger Ship Familiarization
STCW A-V/2 crowd management: moving hundreds of passengers to muster and into survival craft, marine evacuation systems, fire control and ventilation shutdown, watertight doors and damage control.
Personal Safety & Social Responsibilities
Living and working safely aboard: safety briefings and escape routes, accident prevention, MARPOL garbage and pollution rules, communication with the crew you are stuck at sea with, and fatigue.
Personal Survival Techniques
Abandon ship and stay alive: donning lifejackets and immersion suits, getting into a boat or raft, exposure and hypothermia, pyrotechnics, and the signals that go with all of it.
Refresher Elementary First Aid
EFA revalidation with the awkward cases in it — the stroke you have to recognise, the choking infant, anaphylaxis, the casualty who looks drunk and is not, and how to carry any of them.
Refresher Course for STCW Modular Courses
The combined revalidation paper: what changed in STCW, the fire and survival drills as they are now run, emergency command, and the accident case studies behind the latest amendments.
Refresher Personal Safety & Social Responsibilities
The short PSSR revalidation bank — garbage discharge screen sizes and bunkering care alongside empathetic listening, stress, life-saving signals and a little ship terminology.
Security Training for Seafarers with Designated Security Duties
ISPS duties for the crew who actually carry them out: security levels 1 to 3, recognising weapons and threats, searching ship and stores, drills, citadel procedure and crowd control.
Advanced Training for Oil Tanker Cargo Operations
Oil tanker cargo work at officer level: cargo properties, pumps and pipeline systems, venting and inert gas, crude oil washing, static electricity limits and MARPOL pollution response.
Vertical Integration Course for Trainer
For the instructor rather than the candidate: adult learning and motivation, the STCW competence tables, competency-based assessment, lesson planning with simulators and aids, and QSS audit.
OCTCO/OCTF — choose a set
Reshuffling deals every question in the bank into new sets, so Set 3 becomes a different 30 questions. Scores already recorded stay.
A fresh random draw from all 802 questions, marked out of 30 with 15 to pass — the closest this gets to the real paper.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
A full-length slice of the bank — 15 correct to pass.
The short tail of the bank: 22 questions, 11 correct to pass.
For instructors: run OCTCO/OCTF live in class
Turn these questions into a live class quiz in Slides. Students join with a code and answer on their phones, the answer and its explanation show when you reveal, and a class scoreboard closes it. The last slide sends the class back here to keep practising. Free, with a CryoSim sign-in.
A set is sent exactly as dealt on this device. Reshuffle above first if you want a different Set N. The deck is saved in your Slides under “DG Exit”; press 🔴 Go Live there to start the class.
Send this OCTCO/OCTF course to your batch
Revising with your course-mates? One tap drops the OCTCO/OCTF practice link into the batch WhatsApp group. For training institutes: it is free for the whole batch — each candidate practises on their own phone and keeps their own scores with a free sign-in (there is no instructor dashboard).
Get notified when Mariner Plus (full mock tests) opens
Everything on DG Exit Exam stays free. Mariner Plus is a planned extra with full mock tests; it is not open yet. Leave your e-mail and we will write to you once, when it opens. We use it for nothing else (privacy).
More free tools for seafarers
- SIRE Pro — SIRE 2.0 tanker inspection prep — our own guidance, referenced to SIRE 2.0 question numbers.
Exam facts
| Course | Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF) |
|---|---|
| Exam pattern | DG Shipping, India (course: STCW, IMO convention) |
| Question pattern | Multiple Choice Questions (MCQ) |
| Passing criteria | 15 out of 30 (50%) |
| Questions available here | 802, in 27 sets plus a mock |
Key areas covered
- MARPOL Annex I and II oil and chemical tanker regulation
- Inert Gas System oxygen limits (below 8%) and deck water seals
- Crude Oil Washing safety, piping and operational rules
- ODMCS monitoring and the 30 litres per nautical mile discharge limit
- Static electricity mitigation and cargo transfer safety
Before you start
Is the OCTCO/OCTF practice free?
Yes. Every set and the mock exam are free. Your first test each day needs no account; a free sign-in gives unlimited tests. There is no payment.
Do I need an account?
Not for your first test of the day. Signed out you can take one test a day (a set or the mock), with the full score sheet and marked review at the end. A free CryoSim sign-in with your Google account gives unlimited tests and saves your scores to the account instead of to this browser, so the phone you revise on at sea and the laptop you use ashore show the same progress. Sign in whenever you like — anything you have already done in this browser stays where it is.
Is this made or endorsed by DG Shipping?
No. CryoSim is independent. "DG Shipping pattern" describes the format the questions follow — multiple choice, marked out of 30 with 15 to pass — and nothing more. In India the real exit exam is DG Shipping's online paper of 30 questions in 30 minutes, sat at your training institute; the exit exam guide has the rules, fees and sources.
Can a training institute use this with a batch?
Yes, freely — there is nothing to buy. Send the course link to the batch (the WhatsApp button under the set picker does it in one tap) and each candidate practises on their own phone; each candidate sees their own score sheet, and a free sign-in keeps their scores. Scores stay with each candidate, in their own CryoSim account; there is no instructor dashboard. To run a set live in class, the Open in Slides box on each course page turns it into a class quiz in Slides, with a class scoreboard at the end. If you need to see a batch's results on your own question papers, Quizly runs named batch sessions. The DG Exit Exam overview for institutes shows how the sets, the mock and the answer keys work, and the step-by-step guide to DG Exit Exam walks a first-time candidate through it.
What exactly am I practising?
A bank of 802 multiple-choice questions written against the Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF) STCW syllabus and set on the DG Shipping exam pattern, in a single consistent four-option format, with an explanation on every question. This is practice material, not the actual exam paper — no question here is claimed to be a real exam question, and passing every set is preparation for the exit exam rather than a substitute for the course.
How are the OCTCO/OCTF sets shuffled?
The unit that gets shuffled is the whole 802-question bank, not one set: reshuffling re-deals every question into new sets, so Set 3 keeps its size but becomes a different 30 questions. The four options are shuffled with it, which is why nobody can pass this by remembering that the right answer was third from the top.
What is the pass mark for the OCTCO/OCTF exit exam?
15 out of 30 — 50% — which is the mark every full-length set here is scored against. A short set (the tail of the bank) has no official mark, so the same 50% is applied to its own length, and the mock exam is marked out of 30 like the real paper.