SOLAS Carpentry common mistakes
SOLAS Carpentry · Understand the traps and how to avoid them.
Treating SOLAS fire-integrity requirements for timber as a single global rule, and applying the same lining, trim and surface-spread constraints to every space on board instead of classifying the space first (accommodation, stairway enclosure, corridor, control station, machinery space).
Candidates memorise a few headline numbers for combustible materials and then apply them everywhere, because the regulation text is dense and cross-referenced and the space categories look similar at a glance.
What to do instead
Before answering any fire-material question, write down the space category and whether it is on an escape route, then recall the applicable limits for that category. Practise sorting a ship's spaces into categories until classification becomes automatic.
Confusing the fire-resisting divisions with each other, for example treating a B-class bulkhead as equivalent to an A-class one, or forgetting that B-class divisions are also required to be gastight where specified.
The letters A, B and C are easy to memorise as an ordered list, but the defining test for each (insulation, integrity, temperature rise) and the extra qualifiers get lost when candidates study from summaries rather than the definitions.
What to do instead
Build a comparison table with columns for integrity, insulation, temperature rise and permitted materials, and fill it from the definitions. Then test yourself by describing what each division must achieve, not just its letter.
Answering door and closure questions by focusing only on the fire rating of the door leaf and ignoring the self-closing arrangement, hold-back release, and the requirement that doors on escape routes be operable from either side without a key.
Door hardware is treated as a detail, and candidates picture a fire door rather than the full assembly and its operating requirements.
What to do instead
For each door type, list leaf rating, frame, self-closing mechanism, hold-back release method and means of operation from both sides. Rehearse the escape-route door requirements separately from the fire-integrity ones.
Describing escape routes in general terms such as 'two means of escape' without specifying the required width, continuity, marking and the prohibition on dead ends or reductions in width along the route.
Candidates recall the headline principle and stop there, so answers lack the measurable criteria examiners look for.
What to do instead
Learn the escape-route requirements as a checklist: number of routes, minimum clear width, continuity, low-level lighting or marking, dead-end limits, and final exit arrangements. Apply the checklist to a described layout when practising.
Mixing up the fire-safety measures that apply to a new-build ship with those permitted as equivalent arrangements or accepted by the administration for existing ships, and answering as if one rule covers both.
Study material often presents requirements without the date-of-construction and application clauses, so candidates do not realise the same question can have different answers depending on the ship.
What to do instead
For every requirement you learn, note the ship type and construction date it applies to. When a question gives a ship description, read it first and select the regime before recalling numbers.
Giving structural fire-protection answers about timber and combustible materials without distinguishing between the material of the bulkhead or deck itself and the surface finish or lining applied over it.
Candidates conflate 'structure' and 'surface', so they apply surface-spread limits to structural members or assume a steel bulkhead makes any lining acceptable.
What to do instead
Separate the two questions explicitly: what may the structure be made of, and what may be applied to its surface in this space? Answer them in that order and state which limit you are applying.
On ventilation and ducting questions, ignoring the fire dampers, penetrations and the requirement to maintain the division where a duct passes through it, and answering only about the duct material.
Ducts are pictured as pipework, so the key point that a penetration must not destroy the integrity of the division is missed.
What to do instead
Treat every penetration question as a question about restoring the division. State the division rating, the penetration sealing, the damper and its operation, and the inspection arrangement.
Writing answers about means of escape from machinery spaces that do not mention the two independent routes, the separation between them, and the protection of the lower route where one is provided.
Machinery-space escape is studied as a general evacuation topic rather than as a specific arrangement with defined geometry and protection.
What to do instead
Draw a simple machinery-space section showing both escape routes, label the separation and the protection of the lower route, and describe the drawing aloud until the arrangement is fixed in memory.
Answering questions on fire detection and alarm arrangements in accommodation by naming detector types without linking them to the space's fire risk, the required indication at the control station, and the need for the alarm to be audible throughout.
Detector types are memorable and easy to list, so candidates list them instead of addressing the design intent of the system.
What to do instead
For each space, state the detection principle appropriate to the expected fire, where the signal is indicated, and how the alarm reaches everyone. Practise explaining the system as a chain rather than a list.
Losing marks on calculation-style or dimension questions by quoting a figure without units or without stating the condition it applies to, such as a clearance, a width or an insulation value.
Candidates revise numbers in isolation and reproduce them under time pressure without the qualifying context that gives the number meaning.
What to do instead
Always write the quantity, the unit and the condition together, for example the minimum clear width of an escape route and the space it serves. When revising, store each number with its condition attached.