Worksheet 3 · Skill 7
Doubling the angle on the bow
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Steering 152°T at 9.6 kn, at 1025 you see Mill stack 40° on the starboard bow. At 1042 it is 80° on the starboard bow.
How far off the object are you at 1042? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1042: ________ nm Distance off when abeam: ________ nm
Steering 239°T at 8.5 kn, at 1220 you see Westfield church spire 35° on the starboard bow. At 1229 it is 70° on the starboard bow.
How far off the object are you at 1229? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1229: ________ nm Distance off when abeam: ________ nm
Steering 282°T at 9.2 kn, at 1310 you see Gannet Rock daybeacon 30° on the port bow. At 1320 it is 60° on the port bow.
How far off the object are you at 1320? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1320: ________ nm Distance off when abeam: ________ nm
Steering 116°T at 7.3 kn, at 0705 you see Kittle water tank 20° on the starboard bow. At 0718 it is 40° on the starboard bow.
How far off the object are you at 0718? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 0718: ________ nm Distance off when abeam: ________ nm
Steering 195°T at 5.3 kn, at 1700 you see Westfield church spire 30° on the starboard bow. At 1721 it is 60° on the starboard bow.
How far off the object are you at 1721? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1721: ________ nm Distance off when abeam: ________ nm
Steering 134°T at 8.3 kn, at 1120 you see Gannet Rock daybeacon 25° on the port bow. At 1136 it is 50° on the port bow.
How far off the object are you at 1136? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1136: ________ nm Distance off when abeam: ________ nm
Steering 038°T at 6.5 kn, at 1235 you see Gannet Rock daybeacon 25° on the starboard bow. At 1242 it is 50° on the starboard bow.
How far off the object are you at 1242? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1242: ________ nm Distance off when abeam: ________ nm
Steering 080°T at 6.4 kn, at 1610 you see Gannet Rock daybeacon 25° on the port bow. At 1634 it is 50° on the port bow.
How far off the object are you at 1634? If you hold your course and there is no current, how far off will you pass when it is abeam?
Tolerance: 0.05 nm.
Distance off at 1634: ________ nm Distance off when abeam: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Distance off at 1042: 2.72 nm Distance off when abeam: 2.68 nm | No. 3001 (worked solution) |
| 2 | Distance off at 1229: 1.28 nm Distance off when abeam: 1.20 nm | No. 3002 (worked solution) |
| 3 | Distance off at 1320: 1.53 nm Distance off when abeam: 1.33 nm | No. 3003 (worked solution) |
| 4 | Distance off at 0718: 1.58 nm Distance off when abeam: 1.02 nm | No. 3004 (worked solution) |
| 5 | Distance off at 1721: 1.86 nm Distance off when abeam: 1.61 nm | No. 3005 (worked solution) |
| 6 | Distance off at 1136: 2.21 nm Distance off when abeam: 1.70 nm | No. 3006 (worked solution) |
| 7 | Distance off at 1242: 0.76 nm Distance off when abeam: 0.58 nm | No. 3007 (worked solution) |
| 8 | Distance off at 1634: 2.56 nm Distance off when abeam: 1.96 nm | No. 3008 (worked solution) |