Worksheet 1 · Skill 7
Doubling the angle on the bow
Plot Pass worksheet. Plot Pass $1.95/month or $19.50/year · Free during preview. Plotroom · cedarpointmarina.net · invented chart, not for navigation.
Steering 138°T at 7.3 kn, at 1210 you see Gannet Rock daybeacon 35° on the port bow. At 1217 it is 70° on the port bow.
How far off the object are you at 1217? 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 1217: ________ nm Distance off when abeam: ________ nm
Steering 065°T at 6.0 kn, at 1255 you see Kittle water tank 35° on the starboard bow. At 1317 it is 70° on the starboard bow.
How far off the object are you at 1317? 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 1317: ________ nm Distance off when abeam: ________ nm
Steering 188°T at 10.3 kn, at 1230 you see Gannet Rock daybeacon 30° on the starboard bow. At 1236 it is 60° on the starboard bow.
How far off the object are you at 1236? 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 1236: ________ nm Distance off when abeam: ________ nm
Steering 253°T at 6.2 kn, at 1755 you see Westfield church spire 40° on the starboard bow. At 1809 it is 80° on the starboard bow.
How far off the object are you at 1809? 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 1809: ________ nm Distance off when abeam: ________ nm
Steering 117°T at 5.7 kn, at 0805 you see Kittle water tank 20° on the starboard bow. At 0823 it is 40° on the starboard bow.
How far off the object are you at 0823? 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 0823: ________ nm Distance off when abeam: ________ nm
Steering 305°T at 6.9 kn, at 0720 you see Heron Point Light 35° on the port bow. At 0740 it is 70° on the port bow.
How far off the object are you at 0740? 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 0740: ________ nm Distance off when abeam: ________ nm
Steering 222°T at 9.2 kn, at 1050 you see Westfield church spire 25° on the starboard bow. At 1059 it is 50° on the starboard bow.
How far off the object are you at 1059? 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 1059: ________ nm Distance off when abeam: ________ nm
Steering 085°T at 4.8 kn, at 1235 you see Gannet Rock daybeacon 25° on the starboard bow. At 1251 it is 50° on the starboard bow.
How far off the object are you at 1251? 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 1251: ________ nm Distance off when abeam: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Distance off at 1217: 0.85 nm Distance off when abeam: 0.80 nm | No. 1001 (worked solution) |
| 2 | Distance off at 1317: 2.20 nm Distance off when abeam: 2.07 nm | No. 1002 (worked solution) |
| 3 | Distance off at 1236: 1.03 nm Distance off when abeam: 0.89 nm | No. 1003 (worked solution) |
| 4 | Distance off at 1809: 1.45 nm Distance off when abeam: 1.42 nm | No. 1004 (worked solution) |
| 5 | Distance off at 0823: 1.71 nm Distance off when abeam: 1.10 nm | No. 1005 (worked solution) |
| 6 | Distance off at 0740: 2.30 nm Distance off when abeam: 2.16 nm | No. 1006 (worked solution) |
| 7 | Distance off at 1059: 1.38 nm Distance off when abeam: 1.06 nm | No. 1007 (worked solution) |
| 8 | Distance off at 1251: 1.28 nm Distance off when abeam: 0.98 nm | No. 1008 (worked solution) |