Worksheet 4 · 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 251°T at 11.5 kn, at 1155 you see Gannet Rock daybeacon 30° on the port bow. At 1200 it is 60° on the port bow.
How far off the object are you at 1200? 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 1200: ________ nm Distance off when abeam: ________ nm
Steering 147°T at 10.3 kn, at 1310 you see Kittle water tank 35° on the starboard bow. At 1323 it is 70° on the starboard bow.
How far off the object are you at 1323? 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 1323: ________ nm Distance off when abeam: ________ nm
Steering 061°T at 9.8 kn, at 1155 you see Gannet Rock daybeacon 30° on the port bow. At 1201 it is 60° on the port bow.
How far off the object are you at 1201? 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 1201: ________ nm Distance off when abeam: ________ nm
Steering 230°T at 9.0 kn, at 0945 you see Heron Point Light 30° on the port bow. At 1003 it is 60° on the port bow.
How far off the object are you at 1003? 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 1003: ________ nm Distance off when abeam: ________ nm
Steering 165°T at 9.5 kn, at 1125 you see Heron Point Light 20° on the starboard bow. At 1147 it is 40° on the starboard bow.
How far off the object are you at 1147? 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 1147: ________ nm Distance off when abeam: ________ nm
Steering 354°T at 7.0 kn, at 1400 you see Tern Island tower 35° on the port bow. At 1426 it is 70° on the port bow.
How far off the object are you at 1426? 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 1426: ________ nm Distance off when abeam: ________ nm
Steering 072°T at 8.1 kn, at 0935 you see Kittle water tank 40° on the starboard bow. At 0943 it is 80° on the starboard bow.
How far off the object are you at 0943? 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 0943: ________ nm Distance off when abeam: ________ nm
Steering 181°T at 6.7 kn, at 1115 you see Gannet Rock daybeacon 35° on the port bow. At 1120 it is 70° on the port bow.
How far off the object are you at 1120? 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 1120: ________ nm Distance off when abeam: ________ nm
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Distance off at 1200: 0.96 nm Distance off when abeam: 0.83 nm | No. 4001 (worked solution) |
| 2 | Distance off at 1323: 2.23 nm Distance off when abeam: 2.10 nm | No. 4002 (worked solution) |
| 3 | Distance off at 1201: 0.98 nm Distance off when abeam: 0.85 nm | No. 4003 (worked solution) |
| 4 | Distance off at 1003: 2.70 nm Distance off when abeam: 2.34 nm | No. 4004 (worked solution) |
| 5 | Distance off at 1147: 3.48 nm Distance off when abeam: 2.24 nm | No. 4005 (worked solution) |
| 6 | Distance off at 1426: 3.03 nm Distance off when abeam: 2.85 nm | No. 4006 (worked solution) |
| 7 | Distance off at 0943: 1.08 nm Distance off when abeam: 1.06 nm | No. 4007 (worked solution) |
| 8 | Distance off at 1120: 0.56 nm Distance off when abeam: 0.52 nm | No. 4008 (worked solution) |