How can rainwater be safely collected for drinking aboard a liferaft?

A. Collecting rainwater is only worthwhile if a large, dedicated collection device is available

B. Rainwater should be collected directly without any rinsing, since salt contamination is not a concern

C. Use the raft's canopy or a dedicated rain-catchment feature (if fitted) to channel rainwater into a clean container, after first rinsing away any initial salt residue from sea spray on the catchment surface — even a small amount of fresh rainwater collected this way is valuable and worth the effort

D. Rainwater cannot realistically be collected aboard a liferaft and should not be attempted

A. Cold shock response only affects people with pre-existing heart conditions and is not a general concern

B. Cold shock response is purely psychological with no physical effects on breathing or heart rate

C. Cold shock takes around an hour to develop and is identical to hypothermia

D. Cold shock causes an involuntary gasp reflex, rapid breathing, and a sudden spike in heart rate and blood pressure in the first minute or so of cold water immersion — this is actually a greater immediate drowning risk than hypothermia, which takes much longer to develop, because the gasp reflex can cause water inhalation if the face is submerged at that moment

A. A position used only when removing an immersion suit in calm water

B. A swimming technique designed to maximise speed when swimming towards a liferaft or rescue vessel

C. A position adopted by a lone individual in the water wearing a lifejacket — knees drawn up to the chest, arms crossed and held close to the sides of the body — which reduces the surface area exposed to cold water and protects areas of high heat loss (groin, sides of chest, head), significantly slowing the onset of hypothermia

D. A group huddling technique used only when more than five people are in the water together