航行安全與氣象(概要)題庫下載題庫

(a) Shapes shall be black and of the following sizes:

(i) a ball shall have a diameter of not less than 0.6 m:

(ii) a cone shall have a base diameter of not less than 0.6 m and a height equal to its diameter:

(iii) a cylinder shall have a diameter of at least 0.6 m and a height of twice its diameter:

(iv) a diamond shape shall consist of two cones as defined in (ii) above having a common base.

(b) The vertical distance between shapes shall be at least 1.5 m.

(c) In a vessels of less than 20 m in length shapes of lesser dimensions but commensurate with the size of the vessel may be u...

6. Shapes

(a) Shapes shall be black and of the following sizes:

(i) a ball shall have a diameter of not less than 0.6 m:

(ii) a cone shall have a base diameter of not less than 0.6 m and a height equal to its diameter:

(iii) a cylinder shall have a diameter of at least 0.6 m and a height of twice its diameter:

(iv) a diamond shape shall consist of two cones as defined in (ii) above having a common base.

(b) The vertical distance between shapes shall be at least 1.5 m.

(c) In a vessels of less than 20 m in length shapes of lesser dimensions but commensurate with the size of the vessel may be used and the distance apart may be correspondingly reduced.