When checking CPA (Closest Point of Approach) and TCPA (Time to Closest Point of Approach), always remember—ships can change course or speed at any time. Don’t ever assume the other vessel will follow COLREGs perfectly, or take the right action. Just like on the road, there are reckless drivers at sea too. That’s why it’s critical for you to always follow the COLREGs and use Rule 2 and Rule 17 when needed. Your CPA measurements usually reference the bridge or radar antenna, depending on your rad
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Understanding CPA (Closest Point of Approach) and BCR (Bow Cross Range) is essential for avoiding close calls. If a target's bow cross range is ahead, turning toward it will *increase* your CPA, making the situation safer. Turning away will *decrease* CPA, bringing danger closer. But if the bow cross range is astern, the logic flips—turning away gives you more room, while turning toward brings you closer. This simple logic can boost your radar reading game big time. ⚓ How do you usually react wh
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