Lookout, Safe Speed and Collision Risk
The core responsibilities that apply before choosing any manoeuvring rule: lookout, safe speed, risk assessment and timely positive action.
How to prepare for Day Skipper Theory
Learn the navigation foundations first, combine tide and weather into berth-to-berth plans, then rehearse collision avoidance, electronic cross-checks, seamanship and emergency decisions.
Core concepts
Concept 1
Every vessel must maintain a proper lookout by sight, hearing and all available appropriate means and proceed at a safe speed for the conditions.
Exam cue: Establish visibility, traffic, sea room, vessel response and available sensors before deciding speed.
Concept 2
Collision risk is assessed from all available information; a steady bearing with decreasing range is a strong warning, but uncertainty must not be treated as safety.
Exam cue: Use repeated bearings, range and visual aspect rather than one snapshot.
Concept 3
Avoiding action should be early, substantial, readily apparent and monitored until the vessels are finally past and clear.
Exam cue: Check the result of the manoeuvre and remain ready for further action.
Risk pitfalls and guardrails
Jumping straight to stand-on or give-way labels without first assessing risk.
Guardrail: Do not present the 601-item authoring target as an official RYA paper and do not treat theory study as a substitute for recognised assessment or practical skippering competence.
Making a series of small course changes that are unclear to the other vessel.
Guardrail: Do not present the 601-item authoring target as an official RYA paper and do not treat theory study as a substitute for recognised assessment or practical skippering competence.
Assuming no risk because electronic closest-point calculations look favourable.
Guardrail: Do not present the 601-item authoring target as an official RYA paper and do not treat theory study as a substitute for recognised assessment or practical skippering competence.
Memory anchors
Lookout
Use sight, hearing and every appropriate available means.
Safe Speed
A speed that permits effective action and stopping within suitable distance.
Steady Bearing
Little bearing change with decreasing range indicates collision risk.
Early and Substantial
Avoiding action should be positive and obvious.
Past and Clear
Monitor until the encounter is genuinely over.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What does Rule 5 require?
Who must proceed at a safe speed?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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