SVOP Marine Safety and Emergencies 2 — Questions and Answers
Question 1: What is the purpose of a personal locator beacon (PLB) and how does it differ from an EPIRB?
- A PLB is a personal-worn 406 MHz distress beacon that transmits position to COSPAS-SARSAT satellites when activated manually — smaller than an EPIRB, intended for individual use rather than the vessel (Correct answer)
- A PLB is a type of EPIRB designed for vessels over 100 GT only
- A PLB transmits on VHF channel 16 only, with no satellite uplink
- A PLB and EPIRB are identical devices with different brand names
Correct answer: A PLB is a personal-worn 406 MHz distress beacon that transmits position to COSPAS-SARSAT satellites when activated manually — smaller than an EPIRB, intended for individual use rather than the vessel
A PLB is a personal device worn or carried by an individual, activated manually in distress to alert COSPAS-SARSAT satellites. Unlike a Category I EPIRB, it does not float-free automatically and must be manually activated. It is registered to a person, not a vessel.
Both PLBs and EPIRBs operate on 406 MHz and use the COSPAS-SARSAT satellite system to alert rescue coordination centres. Key differences: PLBs are designed for individual use — worn on a lifejacket or carried in a pocket; they must be manually activated; they are registered to a person (not a vessel); they are smaller and have a shorter battery life (typically 24 hours minimum vs. 48 hours for EPIRBs). EPIRBs are vessel-mounted devices; Category I EPIRBs automatically release and activate when submerged 1–4 m (via hydrostatic release); they are registered to the vessel. For commercial vessel operations, an EPIRB (ideally Category I with GPS encoding) is required for offshore passages, while PLBs provide backup personal protection for crew and passengers.
Question 2: What is a 'pyrotechnic distress signal' and what are the different types used in Canadian waters?
- A flare or rocket that produces bright light, smoke, or both to signal distress — types include hand flares, parachute rockets, smoke signals, and orange smoke for daytime (Correct answer)
- Electronic LED flashing devices approved under the 2018 Small Vessel Regulations update
- Any signal visible at night — including flashlights and spotlight patterns
- Only the orange smoke canister used by commercial vessels under the Small Vessel Regulations
Correct answer: A flare or rocket that produces bright light, smoke, or both to signal distress — types include hand flares, parachute rockets, smoke signals, and orange smoke for daytime
Pyrotechnic distress signals include: red hand flares (night, close range); red parachute rocket flares (night, long range — visible at 40+ km); orange smoke signals (daytime); and buoyant orange smoke signals. Requirements vary by operating area and vessel class.
The Small Vessel Regulations specify minimum pyrotechnic signal requirements based on vessel type and operating area. Common types: (1) Red hand flares — burn for 60+ seconds, visible to ~10 km at night; (2) Red parachute rocket flares — launch to 300 m altitude, descend slowly, visible 40+ km at night; (3) Orange smoke hand signal — daytime use, visible from aircraft at distance; (4) Buoyant orange smoke signal — floats and produces thick orange smoke for aerial spotting; (5) Multi-star rockets — produce multiple signals in sequence. Best practice: carry both night (red flares/rockets) and day (orange smoke) signals. Use parachute rockets to attract attention; use hand flares when a vessel or aircraft is visible and approaching. Store in a waterproof container; check expiry dates annually.
Question 3: What immediate action should be taken if a fire breaks out in the engine compartment of a small vessel?
- Shut down the engine and fuel supply immediately, deploy the fixed fire suppression system if installed, use a CO2 or dry chemical extinguisher through access port, radio for help, and prepare to abandon (Correct answer)
- Open the engine hatch immediately to assess the fire before doing anything else
- Apply water generously to cool the engine and surrounding metal
- Increase speed to blow the fire back with the vessel's slipstream
Correct answer: Shut down the engine and fuel supply immediately, deploy the fixed fire suppression system if installed, use a CO2 or dry chemical extinguisher through access port, radio for help, and prepare to abandon
Engine compartment fires: immediately shut engine and fuel valve to cut the fuel supply; never open the hatch (oxygen fuels the fire); if a fixed suppression system exists, activate it through the sealed port; use CO2 or dry chemical extinguisher through a small access port; radio MAYDAY or PAN PAN; prepare all persons to abandon ship.
Engine compartment fires are among the most dangerous fires on small vessels due to the presence of fuel and flammable vapours. Critical steps: (1) Cut the fuel: turn off the engine and close fuel shutoff valves immediately (this eliminates the fuel source); (2) DO NOT open the engine hatch — opening it provides oxygen that can cause a flashover; (3) Activate any fixed suppression system (CO2, halon, or dry chemical) through its designated discharge port; (4) If no fixed system, discharge a CO2 or dry powder extinguisher through the smallest possible opening; (5) Never use water on a fuel fire — it spreads burning fuel; (6) If the fire is not immediately suppressed, radio MAYDAY, get all persons in lifejackets, and prepare to abandon ship; (7) Position the vessel with the fire downwind of the accommodation.
Question 4: What is 'cold water shock' and how can it be managed during an accidental immersion?
- The immediate physiological response to sudden cold water immersion causing gasping, hyperventilation, and potential cardiac arrest — managed by controlling breathing and staying still (Correct answer)
- A type of hypothermia that develops after 30 minutes of cold water immersion
- The feeling of numbness in extremities after prolonged cold water exposure
- A cognitive impairment caused by drinking cold water after exertion
Correct answer: The immediate physiological response to sudden cold water immersion causing gasping, hyperventilation, and potential cardiac arrest — managed by controlling breathing and staying still
Cold shock is the first response (0–3 minutes) to sudden immersion in cold water: a gasp reflex followed by hyperventilation (risk of inhaling water), increased heart rate and blood pressure (cardiac arrest risk), and panic. Management: try to keep your head above water, control your breathing by concentrating on slowing the breath, and float still rather than swimming.
Cold water immersion has three phases: (1) Cold shock (0–3 min) — sudden cold triggers an immediate gasp (risk of inhaling water), rapid hyperventilation (CO2 washout, causing tetany and panic), and cardiovascular stress. This phase kills even strong swimmers through drowning. Management: a lifejacket keeps the head up; focus on slowing breathing; try to remain calm; do not attempt to swim; (2) Swimming failure (3–30 min) — limb muscles cool, coordination fails. Management: HELP or HUDDLE position with lifejacket; conserve heat; (3) Hypothermia (30 min+) — core temperature drops, consciousness impairs. Understanding these phases is critical for SVOP — operators must plan for immersion survival and ensure crew wear lifejackets at all times in cold conditions.
Question 5: What are the minimum first aid requirements for a small commercial passenger vessel operating in near-coastal waters?
- A first aid kit meeting the standards of the First Aid Kit Schedule under Transport Canada marine regulations, including bandages, dressings, airway management, and emergency medications appropriate for the operating area (Correct answer)
- A basic first aid kit from a pharmacy — no specific certification or content is required
- First aid is not regulated for commercial small vessels — it is at the operator's discretion
- Only a single use-and-discard CPR mask is required under the Small Vessel Regulations
Correct answer: A first aid kit meeting the standards of the First Aid Kit Schedule under Transport Canada marine regulations, including bandages, dressings, airway management, and emergency medications appropriate for the operating area
Transport Canada's marine regulations require commercial vessels to carry a first aid kit meeting specified standards appropriate to the vessel's operating area and voyage duration. The kit contents scale with the distance from medical assistance.
Under the First Aid Regulations (Canada Shipping Act, 2001), commercial vessels must carry first aid supplies appropriate for the vessel's complement and operating area. For near-coastal or offshore voyages, the kit must include: wound dressings, bandages, antiseptics, burn treatment supplies, airway management devices, pain and anti-nausea medications (where permitted), thermal blankets, and written first aid instructions. For offshore or remote voyages, more comprehensive supplies and training are required. Additionally, SVOP operators are expected to hold a marine first aid certificate (such as Transport Canada's Marine Emergency Duties [MED] Basic Safety or an equivalent recognised first aid certification). The regulatory specifics are in the Canada Marine First Aid Regulations. Always check the applicable version of the regulations for the specific vessel and voyage type.
Question 6: What VHF radio channel is designated for distress, safety, and calling in Canadian waters, and what is the protocol for routine use?
- Channel 16 — the universal distress/safety/calling channel that must be monitored at all times; routine vessel-to-vessel traffic must move to a working channel after initial contact on 16 (Correct answer)
- Channel 22A — the primary distress channel used only for Coast Guard communication
- Channel 6 — the inter-ship safety channel for all communications including routine calls
- Channel 68 — the commercial calling channel designated by Transport Canada for small vessels
Correct answer: Channel 16 — the universal distress/safety/calling channel that must be monitored at all times; routine vessel-to-vessel traffic must move to a working channel after initial contact on 16
VHF Channel 16 (156.8 MHz) is the international distress, safety, and calling channel. All vessels equipped with VHF must monitor Ch 16 continuously. Routine communications: call the other vessel on Ch 16, agree on a working channel (68, 71, 72, 73, etc.), and switch — keep Ch 16 clear.
VHF Channel 16 is mandated by ITU Radio Regulations and Canada's Radiocommunication Act as the international distress, safety, and calling frequency. Under the Canada Shipping Act regulations, all vessels required to carry radio must maintain a continuous watch on Ch 16 while underway. MCTS (Marine Communications and Traffic Services) monitors Ch 16 across Canada and coordinates SAR responses. Protocol: (1) Call the station you want on Ch 16; (2) Identify your vessel; (3) Agree on a working channel; (4) Switch to the agreed channel for communication; (5) Return to monitoring Ch 16 after the call. Ch 16 must never be used for routine ship-to-ship or ship-to-shore conversations — it must remain clear for distress calls. In some VTS areas, vessels must also monitor an additional VTS working channel simultaneously.
SVOP Marine Safety and Emergencies 2
What is the purpose of a personal locator beacon (PLB) and how does it differ from an EPIRB?