INTERNATIONAL AND INLAND RULES OF THE ROAD 



21. INTERNATIONAL. 



When is a vessel to be considered 

 under way by these rules? 



At what moment are you "under way" 

 from an anchorage; when your anchor 

 is aweigh, or when it ceases to hold? 



Does the fact of your having or not 

 having way upon your ship have any 

 bearing on whether you are "under 

 way" according to the Rules? 



At what intervals is a sailing pilot 

 vessel required to show a flareup light 

 or lights? 



What is the range of visibility for the 

 white light required to be carried by a 

 sailing pilot vessel? 



At what point does a vessel cease to 

 be privileged in a crossing or overtak- 

 ing situation? 



In a crossing situation, assuming that 

 your vessel and the other steamer both 

 hold course and speed, state how you 

 could make use of the range of his mast- 

 head and after range light to deter- 

 mine: 



(a) Whether he will cross ahead of 

 you. 



(b) Whether you will cross ahead 

 of him. 



(c) Whether risk of collision exists. 

 Under the International Rules, are 



vessels showing "not under command" 

 lights in distress? Explain. 



When are side lights exhibited on: 



(a) Ocean steamers ; 



(b) Sailing vessels; 



(c) Cable vessels; 



(d) Fishing vessels? 



What is meant by the term "burdened 

 vessel"? 



Give the definition of the word "vis- 

 ible" when applied to lights, according 

 to the International Rules. 



How can risk of collision be deter- 

 mined? 



What are the day and night signals 

 for a vessel aground ? 



What shall be deemed to be the length 

 of a vessel ? 



The International Rules prescribe 

 that a foremast light shall be at a 

 height above the hull of not less than 20 

 feet, etc. If you were checking the height 

 of a light, where would you take your 

 measurements from? 



What signal should a vessel give to 

 attract attention, if necessary? 



What lights are required for vessels 

 being pushed ahead? 



In addition to the lights and flares re- 

 quired for sailing pilot vessels, what 

 light does a power-driven pilot vessel 

 carry when on station and not at an- 

 chor? 



What may a power-driven pilot vessel 

 use in place of a flare? 



Is there any provision made in the 

 Rules for the use of additional whistle 

 signals between ships of war or vessels 

 sailing under convoy? Explain. 



The Rules require that a power- 

 driven vessel be provided with an ef- 

 ficient whistle. Does the siren meet this 

 requirement? State your reason. 



What lights are vessels forbidden to 

 exhibit by the Rules? 



What are the lights required on sail 

 pilot vessels when on station? 



Describe the lights and day signals 

 displayed by Coast and Geodetic Survey 

 vessels underway and actually engaged 

 in hydrographic surveying. 



At sea, on what occasion would you 

 display two red lights at night or two 

 black balls during the day? 



A fishing vessel is underway with all 

 sails set and a gasoline engine running. 

 Under the Rules, is she a power-driven 

 or sailing vessel? 



What is meant by "privileged ves- 

 sel"? 



What are the characteristics, range 

 of visibility, and location for the anchor 

 light of a vessel less than 150 feet in 

 length? 



Which of two crossing power-driven 

 vessels has the right of way in a fog? 



What are the signals for a vessel 

 whose fishing gear becomes fast to a 

 rock or other obstruction by day, by 

 night, and in fog? 



What are the fog signals for fishing 

 vessels? 



What are the fog signals for towing 

 vessels? 



What are the fog signals for a vessel 

 engaged in laying or in picking up a 

 navigation mark? 



What lights should a vessel carry 

 when in tow of another vessel? 



Describe the stern light which is car- 

 ried by a vessel underway. 



What is. the day signal for vessels at 

 anchor? 



When is a power-driven vessel en- 

 gaged in towing in International waters 

 required to carry three masthead 

 lights? 



Ill 



