Hover or tap underlined Spanish terms to see their translation and exam tip.
A Hrb=1600 nos encontramos en la Isla de Tarifa (Faro de Tarifa) y queremos llegar Puerto de Tánger (luz del extremo del espigón del puerto) a Hrb=1800. Hay una corriente de Rumbo Rc=075º e intensidad horaria, Ihc=3’. Corrección total, Ct=-5º. - Se pide el Rumbo de aguja (Ra).At Hrb 1600 off Isla de Tarifa lighthouse you want to reach Tangier port breakwater light at Hrb 1800 in a current setting Rc = 075º at Ihc = 3 knots (Ct = –5º). Find the compass course Ra:
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Correct answer: b) Ra = 232º
Why it is correct
From Isla de Tarifa (36º 00.0′ N, 005º 36.6′ W) to Tangier breakwater (35º 47.4′ N, 005º 48.2′ W) is 15.6 miles along Ref = 217º. Over 2 hours (16:00 to 18:00), the 3-knot current setting 075º sets 6 miles towards 075º; joining the tip of the 2-hour current vector to Tangier gives Rv = 227º. With Ct = −5º, Ra = 227º + 5º = 232º.
Why the others are not
- a) Does not offset the 6 miles of current over the 2-hour passage or fails to add the 5º negative compass error.
- c) Does not offset the 6 miles of current over the 2-hour passage or fails to add the 5º negative compass error.
- d) Does not offset the 6 miles of current over the 2-hour passage or fails to add the 5º negative compass error.
How to work it out in the exam
- Lay off 6 miles (2 h at 3 knots) along Rc = 075º from Tarifa and join that point to Tangier: Rv = 227º.
- Convert to compass course with Ct = −5º: Ra = 227º + 5º = 232º.
Where this question comes from
- Región de Murcia · 2026 · 2ª convocatoria · PY Tipo 1 · question 35 Official paper · Official answer key
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Pending instructor review. Machine translation, not reviewed.