| (a) | by inserting, immediately after the words “non-displacement craft” in Rule 3(a) of Part A, the words “, WIG craft”; |
| (b) | by deleting the full-stop at the end of paragraph (l) of Rule 3 of Part A and substituting a semi-colon, and by inserting immediately thereafter the following paragraph:| “(m) | “wing-in-ground (WIG) craft” means a multimodal craft which, in its main operational mode, flies in close proximity to the surface by utilizing surface-effect action.”; |
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| (c) | by deleting paragraph (a) of Rule 8 of section I of Part B and substituting the following paragraph:| “(a) Any action to avoid collision shall be taken in accordance with the Rules of this Part and shall, if the circumstances of the case admit, be positive, made in ample time and with due regard to the observance of good seamanship.”; |
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| (d) | by inserting, immediately after paragraph (e) of Rule 18 of section II of Part B, the following paragraph:| “(f) | A WIG craft shall, when taking off, landing and in flight near the surface, keep well clear of all other vessels and avoid impeding their navigation. | | (ii) | A WIG craft operating on the water surface shall comply with the Rules of this Part as a power-driven vessel.”; |
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| (e) | by inserting, immediately after paragraph (b) of Rule 23 of Part C, the following paragraph:| “(c) A WIG craft only when taking off, landing and in flight near the surface shall, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit a high intensity all-round flashing red light.”; |
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| (f) | by re-lettering the existing paragraph (c) of Rule 23 of Part C as paragraph (d); |
| (g) | by deleting Rule 31 of Part C and substituting the following Rule:| Where it is impracticable for a seaplane or WIG craft to exhibit lights and shapes of the characteristics or in the positions prescribed in the Rules of this Part she shall exhibit lights and shapes as closely similar in characteristics and position as is possible.”; |
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| (h) | by deleting paragraph (a) of Rule 33 of Part D and substituting the following paragraph:| “(a) A vessel of 12 metres or more in length shall be provided with a whistle, a vessel of 20 metres or more in length shall be provided with a bell in addition to a whistle, and a vessel of 100 metres or more in length shall, in addition, be provided with a gong, the tone and sound of which cannot be confused with that of the bell. The whistle, bell and gong shall comply with the specification in Annex III. The bell or gong or both may be replaced by other equipment having the same respective sound characteristics, provided that manual sounding of the required signals shall always be possible.”; |
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| (i) | by inserting, immediately after paragraph (h) of Rule 35 of Part D, the following paragraph:| “(i) | A vessel of 12 metres or more but less than 20 metres in length shall not be obliged to give the bell signals prescribed in paragraphs (g) and (h) of this Rule. However, if she does not, she shall make some other efficient sound signal at intervals of not more than 2 minutes.”; |
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| (j) | by re-lettering the existing paragraphs (i) and (j) of Rule 35 of Part D as paragraphs (j) and (k), respectively; |
| (k) | by deleting section 13 of Annex I and substituting the following section:““13. High-speed craft*| (a) The masthead light of high-speed craft may be placed at a height related to the breadth of the craft lower than that prescribed in paragraph 2 (a) (i) of this Annex, provided that the base angle of the isosceles triangles formed by the sidelights and masthead light, when seen in end elevation, is not less than 27º. |
| (b) On high-speed craft of 50 metres or more in length, the vertical separation between foremast and mainmast light of 4.5 metres required by paragraph 2 (a) (ii) of this Annex may be modified provided that such distance shall not be less than the value determined by the following formula: |
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| | is the height of the mainmast light above the foremast light in metres, |
| | | is the height of the foremast light above the water surface in service condition in metres, |
| | | is the trim in service condition in degrees, |
| | | is the horizontal separation of masthead lights in metres. |
| | | *Refer to the International Code of Safety for High-Speed Craft, 1994 and the International Code of Safety for High-Speed Craft, 2000.”; |
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| (l) | by deleting paragraph (a) of section 1 of Annex III and substituting the following paragraph:| “(a) | Frequencies and range of audibility |
The fundamental frequency of the signal shall lie within the range 70-700 Hz. The range of audibility of the signal from a whistle shall be determined by those frequencies, which may include the fundamental and/or one or more higher frequencies, which lie within the range 180-700 Hz (± 1 per cent) for a vessel of 20 metres or more in length, or 180-2100 Hz (± 1 per cent) for a vessel of less than 20 metres in length and which provide the sound pressure levels specified in paragraph 1(c) below.”; |
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| (m) | by deleting the first sub-paragraph and the table thereunder of paragraph (c) of section 1 of Annex III and substituting the following paragraph and table:“A whistle fitted in a vessel shall provide, in the direction of maximum intensity of the whistle and at a distance of 1 metre from it, a sound pressure level in at least one 1/3rd-octave band within the range of frequencies 180-700 Hz (± 1 per cent) for a vessel of 20 metres or more in length, or 180-2100 Hz (± 1 per cent) for a vessel of less than 20 metres in length, of not less than the appropriate figure given in the table below.| Length of vessel in metres |
| | 1/3rd-octave band level at 1 metre in dB referred to 2 x 10-5 N/m2 |
| | Audibility range in nautical miles |
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| Note: *1When the measured frequencies lie within the range 180-450 Hz |
| *2When the measured frequencies lie within the range 450-800 Hz |
| *3When the measured frequencies lie within the range 800-2100 Hz”; and |
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| (n) | by deleting paragraph (b) of section 2 of Annex III and substituting the following paragraph:| Bells and gongs shall be made of corrosion-resistant material and designed to give a clear tone. The diameter of the mouth of the bell shall be not less than 300 mm for vessels of 20 metres or more in length. Where practicable, a power-driven bell striker is recommended to ensure constant force but manual operation shall be possible. The mass of the striker shall be not less than 3% of the mass of the bell.”. |
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[G.N. Nos. S 483/95; S 61/96] |
