Hover or tap underlined Spanish terms to see their translation and exam tip.
La luz de tope muestra una luz sin interrupción en un arco de:The masthead light shows an unbroken light over an arc of:
Show the answer
Correct answer: c) 225º
Why it is correct
Under Rule 21 a), the masthead light covers 225 degrees: from dead ahead to 22.5 degrees abaft the beam on each side.
Why the others are not
- a) 112.5 degrees is the arc of each sidelight.
- b) 135 degrees is the arc of the stern light.
- d) 360 degrees is an all-round light.
How to work it out in the exam
- Check the sum: two sidelights (112.5 × 2 = 225) match the masthead light, and 225 + 135 = 360.
Where this question comes from
- Región de Murcia · 2018 · 1ª convocatoria · PER Tipo 1 · question 19 Official paper · Official answer key
- Junta de Andalucía · 2015 · 1ª convocatoria · PER Modelo A · question 22 Official paper · Official answer key
Regulations
- IMO: Convention on the International Regulations for Preventing Collisions at Sea, 1972 (COLREGs) · Rule 21
- RIPA, consolidated text (BOE) · Rule 21
Pending instructor review. Machine translation, not reviewed.