Nautical Science P2 2017 hlayiso.com

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE EXAMINATION NOVEMBER 2017 NAUTICAL SCIENCE: PAPER II Time: 3 hours 150 marks PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY 1. This question paper consists of 6 pages. Please check that your question paper is complete. 2. Answer ALL the questions in Sections A, B and C. 3. Begin the answer to each new question on a new page. 4. The use of scientific calculators is permitted. 5. Alphanumeric calculators and dictionaries are NOT permitted. 6. Nautical tables may be used. 7. It is in your own interest to write legibly and to present your work neatly. REQUIREMENTS Drawing Instruments Radar Plotting Sheet ANNEXURES – Nil IEB Copyright © 2017 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: NAUTICAL SCIENCE: PAPER II Page 2 of 6 SECTION A SEAMANSHIP QUESTION 1 In compliance with the Convention on the International Regulations for Preventing Collisions at Sea, 1972 as amended (hereinafter referred to as the COLREGs), answer the following questions: 1.1 How should the Officer of the Watch ascertain whether a risk of collision exists between two vessels approaching one another? (5) 1.2 From the bridge you sight a vessel ahead on a steady bearing displaying the following day signal: (a) What do these signals tell you about the operation of this vessel? (2) (b) What is your course of action if this vessel is seen right ahead? (4) 1.3 When approaching the harbour you see a sailing vessel outbound. The vessel displays a day signal of a "black cone" apex down, in the forepart where it can best be seen. (a) What does this signal mean? (3) (b) What fog signal will this vessel sound? (4) 1.4 Two vessels are proceeding down a channel, the one overtaking the other. In terms of the COLREGs, the overtaking vessel is to "give-way", and the other is to "stand-on". What do you understand by the terms: (a) "Give-way vessel"? (4) (b) "Stand-on vessel"? (4) IEB Copyright © 2017

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: NAUTICAL SCIENCE: PAPER II Page 3 of 6 1.5 State which vessels must comply with the COLREGs. (4) 1.6 A vessel over 50 metres in length is stopped and not making way through the water due to a machinery breakdown and is therefore "not under command". (a) State what lights and day shapes are required to be displayed by this vessel, and support your answer with a sketch for each (night and day). (7) (b) What fog signal would this vessel sound? (3) [40] QUESTION 2 2.1 List six action points in preparing to abandon ship (fitted with gravity davits). (6) 2.2 Name four action points that should be completed with the boats and life rafts immediately after they have been launched in the water. (4) [10] QUESTION 3 Explain the effect on a vessel's stability and draught when a mass of weight is shifted within the vessel if: 3.1 bunker fuel is transferred aft from No. 1 double bottom tanks port and starboard to the engine room service tanks centre. (3) 3.2 ballast water is transferred from No. 4 upper wing tank port to No. 4 double bottom tank starboard. (6) 3.3 ten containers are shifted from No. 4 lower hold starboard to No. 4 hatch top port side. (6) [15] IEB Copyright © 2017 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: NAUTICAL SCIENCE: PAPER II Page 4 of 6 QUESTION 4 Your vessel is navigating in restricted visibility on a course of 030° (T), speed 6 kt. A target is detected on the 12-mile radar range. The following bearings and ranges were recorded: TIME BEARING RANGE 10h00 324° (T) 11,4 m 10h03 325° (T) 10,5 m 10h06 325½° (T) 9,6 m 4.1 Plot the target on the plotting sheet provided. (7) 4.2 Prepare a full target report. (6) 4.3 Explain what action you would take to avoid a close quarter situation with the target. (7) [20] QUESTION 5 General cargo vessels are also referred to as break-bulk vessels. What is the difference between a break-bulk ship and a container ship? [5] 90 marks IEB Copyright © 2017

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: NAUTICAL SCIENCE: PAPER II Page 5 of 6 SECTION B COMMUNICATIONS AND METEOROLOGY QUESTION 6 Describe in one or two paragraphs what the Global Maritime Distress and Safety System (GMDSS) is. [15] QUESTION 7 7.1 There are two basic types of clouds – cumulus and stratus. Describe the formation of each of these two types of clouds. (16) 7.2 List the main features of the north-east and south-east trade winds. (4) [20] 35 marks IEB Copyright © 2017 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: NAUTICAL SCIENCE: PAPER II Page 6 of 6 SECTION C SAILINGS QUESTION 8 A vessel is preparing a passage from Vigo, Spain to Recife, Brazil. 8.1 Calculate the course and distance by Mercator sailing from the following waypoints: Vigo W.P. 42° 00' N 009° 30' W Recife W.P. 08° 00' S 034° 40' W (20) 8.2 What is the steaming time at 18 knots to reach Recife? (5) 25 marks Total: 150 marks IEB Copyright © 2017