Procedure
1) Flag signals One set of signal flags contains 40 flags ( 26 +10+3+1). See animation for single letter navigational signals of common use. Also familiarise the usage of substitutes and answering pennant. Study two and three letter signals and their importance 2) Flash light signals Learn the method of using flash light signals by using Morse codes 3) Navigational lights Study the arc of visibility and colour of common navigational lights such as mast head light ,stern light ,side lights, all round light, towing light etc., Mast head lights: Means a white light placed over the fore end aft centre line showing unbroken light over an are of the horizon of 225o and so fixed as to show the light from right ahead 22.5o abaft the beam on either sides of the vessel. Means a green light on the starboard side and red light on port side each showing an unbroken light over an of the horizon of 112.5o and so fixed as to show the light from right ahead to 22.5o abaft the beam on its respective sides. In a vessel of less than 20m in length, the side lights may be combined in 1 lantern carried on the fore and aft centre line of the vessel. Stern light: Means a white light placed as nearly as practicable as the stern showing an unbroken light over an arc of the horizon of 135o and so fixed to show the light 67.5’ from right aft on each side of the vessel. Towing light: Means a yellow light having a same characteristics as the stern light. e. All round light: Means a light showing an unbroken light over an arc of horizon of 360o. f. Flashing light: Means light flashing at regular intervals at frequency of 120 flashes or more / minute. 4) Signals for fishing vessels Study various day and night signals for fishing vessels. (a) A vessel engaged in fishing whether at underway or anchor shall exhibit only the lights and shapes prescribed in this rule. (b) Trawling: A vessel when engaged in trawling by which is meant the dragging though the water of a dudge net or other apparatus used as fishing appliances shall exhibits. (i) Two all round lights in a vertical line, the upper being green and the lower white or a shape consisting two cones with their apex together, in a vertical line one above the other. (ii) A small mast head light abaft of and higher than the all round green light a vessel of less than 50m is length, shall not obliged to exhibit such a light may doso. (iii) When making way through the water in addition to the light prescribed in this paragraph, side lights and stun lights. (c) A vessel engaged in fishing other than trawling shall exhibit. (i) Two all round lights in a vertical line, the upper being red and lower light white or shape consisting of two cones with apices together in a vertical line one above the other. (ii) When there is a outlaying gear extending more than 150m horizontally from the vessel and all round white light or come apex upwards in the direction of the gear. (iii) When making way through the water. In addition to the light prescribed above this paragraph side lights and streetlights Additional signals: (i) Signals for trawlers: When shooting their nets, 2 white lights in a vertical position, when hauling their nets one white over one red light in a vertical time. (ii) In pair trawling or bull trawling by night; a search light, directed forward in direction of other vessels. (iii) Singles for purse seines: Two yellow lights in a vertical line shall flash alternative. 5) Rules of the Road(ROR) cards ROR cards are available for practice various navigational signals. These cards will have both day and night signals with explanatory notes. Familiarise and practice the signals related to the fishing vessels. |