Worksheet 7 · 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 323°T at 4.1 kn, at 1750 you see Gannet Rock daybeacon 30° on the starboard bow. At 1808 it is 60° on the starboard bow.
How far off the object are you at 1808? 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 1808: ________ nm Distance off when abeam: ________ nm
Steering 255°T at 4.4 kn, at 1055 you see Westfield church spire 20° on the starboard bow. At 1119 it is 40° on the starboard bow.
How far off the object are you at 1119? 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 1119: ________ nm Distance off when abeam: ________ nm
Steering 338°T at 7.9 kn, at 0925 you see Tern Island tower 20° on the starboard bow. At 0945 it is 40° on the starboard bow.
How far off the object are you at 0945? 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 0945: ________ nm Distance off when abeam: ________ nm
Steering 027°T at 5.1 kn, at 1540 you see Gannet Rock daybeacon 35° on the starboard bow. At 1550 it is 70° on the starboard bow.
How far off the object are you at 1550? 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 1550: ________ nm Distance off when abeam: ________ nm
Steering 318°T at 9.1 kn, at 1025 you see Tern Island tower 30° on the starboard bow. At 1036 it is 60° on the starboard bow.
How far off the object are you at 1036? 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 1036: ________ nm Distance off when abeam: ________ nm
Steering 192°T at 4.5 kn, at 1220 you see Westfield church spire 30° on the starboard bow. At 1242 it is 60° 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 159°T at 9.2 kn, at 1315 you see Gannet Rock daybeacon 30° on the port bow. At 1336 it is 60° on the port bow.
How far off the object are you at 1336? 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 1336: ________ nm Distance off when abeam: ________ nm
Steering 185°T at 7.9 kn, at 0905 you see Westfield church spire 40° on the starboard bow. At 0917 it is 80° on the starboard bow.
How far off the object are you at 0917? 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 0917: ________ nm Distance off when abeam: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Distance off at 1808: 1.23 nm Distance off when abeam: 1.07 nm | No. 7001 (worked solution) |
| 2 | Distance off at 1119: 1.76 nm Distance off when abeam: 1.13 nm | No. 7002 (worked solution) |
| 3 | Distance off at 0945: 2.63 nm Distance off when abeam: 1.69 nm | No. 7003 (worked solution) |
| 4 | Distance off at 1550: 0.85 nm Distance off when abeam: 0.80 nm | No. 7004 (worked solution) |
| 5 | Distance off at 1036: 1.67 nm Distance off when abeam: 1.44 nm | No. 7005 (worked solution) |
| 6 | Distance off at 1242: 1.65 nm Distance off when abeam: 1.43 nm | No. 7006 (worked solution) |
| 7 | Distance off at 1336: 3.22 nm Distance off when abeam: 2.79 nm | No. 7007 (worked solution) |
| 8 | Distance off at 0917: 1.58 nm Distance off when abeam: 1.56 nm | No. 7008 (worked solution) |