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24 OUR COURSE FINDER. The Marine Review Coursk FINDER is a course finder in every particular. Every other work or device used for this purpose: requires a lot of figuring, but not so with this work; the book does the figuring for you. The method employed is simply explained and _ is easily understood so that one has the - opportunity of verifying the work; mak- ing it almost impossible for an error. Even where one does riot know the least thing about the system he can use it just as well as another who knows all about it, for the book will do just what _ its name calls for, In other course find- ers you have got to do the finding but not so with ours, it does the work itself. We can say without exaggerating in the least, that this Course Finder will prove of more practical and every-day usefulness than any publication designed for lake men, It can be used almost every hour of the day and night, and in usefulness it is only superseded by the compass itself. It is really a nec- essary auxiliary to the compass. With the two one is able to do things that are difficult for a mathematician to do. 'The books are going fast and our book department is kept busy sending them out. Get your order in at once and have the benefit of a good thing. You'll surely want one in the course of time, so get busy. The book is $2.50 carriage prepaid, sent to any address. If not found just as we have here represented you have the privilege of returning and _ getting your money back. To responsible parties we send the book on approval. CORRECT MAGNETIC CHARTS. Every man in command of a_ boat should have a set of Correct Magnetic Charts of the more important harbors. These charts will be found to be of the greatest service in ascertaining the devia- tion of your compasses. These charts .are drawn on a large. scale and are -perfectly accurate. They are different than any other harbor chart in that they show the positions, names and correct magnetic bearings of all the lighted ranges of the more important harbors. What makes them so useful and need- ful is that each range is drawn, marked and the correct magnetic bearing printed along the bearing line. It is the true bearing corrected for the variation at that place so that all that is necessary is to place your boat's head on that par- ticular range and when steady on the range the difference between what your compass says and the correct magnetic bearing printed on the range is the devi- ation of the compass. What could be more simple than this? A few every-day examples will better Tae MaRINE REVIEW illustrate the system: Light on SE end of Chicago breakwater in range with -Chicago Waterworks crib N 4 E (S 34 W). Chicago Waterworks ¢rib and 4-Mile Waterworks crib in range SE (NW). There are about 20 lighted ranges given for Chicago so that they 'can be used in the night time as weil as in the day time. They can be used better in the night time than in the day time. Now, to show what:a simple matter it is to shape a course to any place you want to go to: Supposing you wanted to shape a course to Pt. Betsey from Chicago and you did not know what it was by your compass. Get light on SE end of Chicago Breakwater and Chicago Waterworks crib in range over stern and when steady on the range note compass course, and from whatever course shown at that time port 3-pt.. from it and it will fetch Pt. Betsey at the right distance off. By this system one is able to shape courses to any place on the lakes with the greatest ease and with perfect accuracy. The convenience of 'these charts are in their size, every- thing showing up plainly and the bear- ings are printed in large type, and are therefore, easily read. By the use of them you cannot possibly make a mis- take in getting on the wrong range or in getting the wrong bearing. These charts are printed on the best quality of linen paper and will stand the wear without tearing, and should last a long timé. Sirce a chart of this kind 'will be much in use and handled a great deal, it was to meet this requirement that a linen cloth was used. We have printed and ready for delivery these charts of Chicago, Cleveland and Buffalo. We are selling the three for $1.00, or 50c for any one. A set of these charts: with the Marine RevigEw Course Finder will simplify the perplexities of a devi- ated compass. Just try it and prove it to your own satisfaction. QUESTIONS FOR WHEELSMEN AND WATCHMEN. ELEVENTH INSTALLMENT, 119. You are steering W x S when you pick up the green sidelight of another steamer bearing SW. <A few minutes later you 'take another bearing and find the same green light bearing SW. What will happen if each of you hold your course? What is the duty of each? 120. You are steering ESE and at the same time you pick up the red light of another steamer four points on your star- board bow, and you are in close quarters. What should you do? 121. Supposing in the above case you were some distance from the red light so that you could with safety run sev- eral minutes before it was necessary to take action, and you found by a second "away. a bearing that the red light bore SSE. By 'each continuing your course would the other fellow cross ahead or astern of you? 122. Supposing under the same con- ditions you found by a second bearing that the red light was drawing ahead; then each continues course, which one will pass astern of the other? 123. Seeing the head and after lights and at the same time one of the side- lights of another steamer, how could you determine approximately the direction she was heading in? 124...The bearing of a red light from you is SSW, and at the same time the. head and after lights are open about two points, about how is this steamer head- ing? 125. You are steering ENE with the wind fresh from the north, and very dark; about four points on your port bow you observe the bearing of a green light of a schooner. You are some dis- tance from the light and have run a few minutes when another bearing of the green light shows that it is drawing ahead, what should you do? 126. The wind is NE and thick; you hear the three blasts of a schooner's fog horn on your starboard bow, but far You are steering NE x E and on taking a second bearing you find that the schooner is drawing more ahead. How is this vessel heading about and is she crossing your course? 127. Under the same conditions sup- posing when you take the second bearing you find the fog blasts have drawn astern, about how is she heading and is she crossing : your course? 128. When would you deem a cross- signal safely to be used? 129. If you could see a green light and at the same time the green light is turned away from you so that it is shut out entirely, which way is this boat's head being turned and which way is her helm? 130. Supposing under the same con- ditions' you could see both the sidelights after observing the green light alone, which way is this ship turning and which way is her helm? ANSWERS AND QUESTIONS FOR WHEELSMEN AND WATCHMEN. EIGHTH INSTALLMENT. PUBLISHED JULY 11. 85. When the wind bears anywhere abaft the beam on either side to those on board. It is when the main. sheet can be slacked off or away and the ves- sel is still able to make her course. 86. A vessel is sailing closehauled when her head is as near to the wind as it can be and she is still able to make progress. It is as close as a vessel can sail against the wind, that is, as close as she can head to the wind.