Navigation I Nau 100 Lab (Page 4 of 4) in pdf

Navigation I Nau 100 Lab Page 4

Part B – Running Fixes

6. At 0018, Branford Reef Light bears 030°T. At 0033, the same light bears 330°T. What

is the position of your 0033 running fix?

41°11.2'N 072°46.8'W (+/- 0.2°)

7. At 0045 you come to course 095°T. At 0051, the range to the south tip of Falkner Island

is 2.5 nm. At 0109, the range is 1.5 nm. What is the position of your 0109 running fix?

41°11.3'N 072°38.3'W (+/- 0.2°)

Part C – Estimated Positions

8. At 0120, when in position 41°11.3'N 072°35.5'W, you alter course to 080°T. At 0151,

Stone Island Reef Light bears 320°T. What is your 0151 estimated position?

41°12.6'N 072°28.3'W (+/- 0.2°)

Part D – Wheel-over Points and Turn Bearings

9. At 0241 you arrive at WP #3 (position 41°13.4'N 072°17.8'W) and alter course to 070°T.

Your next waypoint (WP #4) will be 41°17.0'N 072°04.7'W. When at WP#4 you will

alter course to proceed up New London Harbor channel. Use the ship’s maneuvering

characteristics table, below, to determine your wheel over point. (Use 2000 yards/nm)

Angle of Turn

Advance

Transfer

Angle of Turn

Advance

Transfer

15°

500

60°

940

347

30°

680

100

75°

1007

513

45°

827

207

90°

1020

687

Position of wheel-over point: __41°16.85'N 072°05.25'W_(+/- 0.1°)__

10. What is the turn bearing of the wheel-over point off of New London Harbor Light (Iso 6s

89ft 16M)?

356°T (+/- 2°)

Navigation I Nau 100 Lab Page 4