Chartwork # 5

Additional Questions on Piloting, Position and ETA

Refer to your chart: “Western Long Island Sound” and apply what you learned in:

Chapter #13

1. You are returning to the Five Mile River from Port Jefferson when the fog sets in at 1400.

You take the necessary precautions summarized in Chapter 14 (page 14-5) and turn your attention to plotting your current position.

Fortunately, you have been plotting your DR track, and have posted it on the chart. When you consult your Loran (or your GPS) and note the location that it reports, it is very close to your DR ... and since they are so very close, we will use the Loran position, which is:

40° 58.90’ N 073° 21.60’ W

How far is it to Greens Ledge? ________ At 6 knots, how many minutes to go? __________

What is the true course to Greens Ledge? __________ The magnetic course? __________

How far is it to the nearest aid to navigation basically on your way to Greens Ledge?______

How long will it take you, at 6 knots, to get to this aid? ________ ?

Once at this aid (and the fog is really quite thick) what is your next objective? _________

What is the distance to this next aid? ________ How long will it take to get there? ________

From this aid, how far is it to Greens Ledge? ______How many minutes to get there? _____

By visiting these intermediate points, how much time have you added to your trip? ________

2. You are just north of Lloyd Neck, your Loran (GPS) tells you that you are at

40° 56.70’ N 073° 27.80’ W

There is a nun nearby. Is this N2, N4 or N6? ________

You wish to go to N8 at Target Rock in Huntington Bay. What course will you steer at this point so that you might get to N8?________

3. You are at G1 the mouth of Westcott Cove, East of Shippan Point - and are planning to go to Greens Ledge, which you can see very clearly today. How far is it from you right now ______? . It is now 1000, and at 10 knots, what time will you arrive? ________

What is the course to get there.? ________