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__IN – CLASS ASSIGNMENTS –__

__CLASS 1 - EXERCISE # 1__

__Working with your TABLE GROUP – find the following locations on your “Western Long Island Sound” Chart__

1. Try to find the following landmarks and aids
in our local area:

Flagpole at Long Neck Point

Buoy G”1” Fl G
West of Long Neck Point, entrance to Darien Harbor

Buoy G”1” Fl G 2.5s GONG East of
Little Captain Island
(Greenwich)

Five Mile River

Green’s Ledge Light(house)

Sheffield Island

The Norwalk Channel

The Stack at Manresa Island
(Power Company Stack)

Peck Ledge

Cable and Anchor Reef

Smith Reef

Holly Pond

Shippan Point (Stamford)

R”32” (South of The Cows)

2. Across the Sound - be sure you can find:

Oyster Bay Harbor

Cold Spring
Harbor

The Sand Hole at Lloyd Point

Huntington Bay

Huntington Bay -
R “8” at Target Rock

Eatons Neck Point

The Coast Guard Station at Eatons
Neck (CG 144ft 17M HORN)

Buoy G”1” Fl G 2.5s that is west of
Eatons Neck

Northport Bay

Crane Neck

Old Field Point

Port Jefferson

3. Find the distance scale that shows NAUTICAL
MILES

(This
chart doesn’t have a printed scale – it is approximately 1: 80:000, a “small
scale” chart)

4. The depths are shown in what units? Meters?
Feet? Fathoms? How do you know?

5. At what depth does the color change from blue
to white on the main chart?

On
the detailed (“large scale”) charts on the back ? Is this a CONTOUR LINE ?

6. Are there other contour lines on the main
chart? What contour depths do they show?

7. Point out some Obstructions and Wrecks – at
what depth are they?

Would
they be important in a boat that draws 4 feet?

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__IN – CLASS ASSIGNMENTS –__

__CLASS 1 - EXERCISE # 2__

With
reference to your chart: “Western Long Island Sound:”

1. Is the depth shown in Feet, Meters, or
Fathoms?

**__________**
Is
this depth number determined from High Tide or Low Tide?

**__________**
2. What is the clearance of the railroad bridge
over the Mianus River at Riverside/Cos Cob, shown on the
INSET IN THE TOP LEFT CORNER OF THE MAIN CHART as:

Bascule Bridge
HOR CL 67 FT, VERT CL ?? FT

**__________**
Is
this measurement for clearance at High Tide or Low Tide?

**__________**
3. Find the Compass Rose that is printed in
Mid-Sound on your chart.

Note
the Variation, its date and the rate of change. Recognizing that our chart work will be
conducted using whole degrees (i.e. rounding off the minutes to a whole
degree), please indicate the value for Variation that you will use for this
year’s chart work.

Is it 12°W 13°W 14°W or
15°W ?

______________**°**W
==============================================================

__I__

__CLASS 1 - EXERCISE # 3 - HOMEWORK__

answers are posted on web at

dsps.darien.org

Plotting
a Course - & the 60 D = ST Formula

Plot
these courses on your chart, and determine the MAGNETIC course to the goal,

And
the RECIPROCAL COURSE – the course back home again.

MAGNETIC RECIPROCAL

(also Magnetic)

1. Darien’s
G”1” to G”1” Fl G 2.5 sec at Eatons’ Neck

**_________****°****__________****°**

What
is the distance of this course?
_______nm

At
6 knots, how long will it take to get there?
___________

2. Darien’s
G”1” to G”15” GONG, North of Lloyd Point

**_________****°****__________****°**
What
is the distance of this course?
_______nm

If
you got there in 20 minutes, how fast were you going? ___________

3. Smith Reef R”30” to Stamford’s R “32” at The Cows

**_________****°****__________****°**
What
is the distance of this course?
_______nm

You
leave at 0945 and travel at 4
knots. What time do you expect to
arrive? ___________

======================================================

ANSWERS:

CLASS
# 1 IN-CLASS EXERCISE # 1 and # 2 AND EXERCISE
#3 -
HOMEWORK

__CLASS 1 – EXERCISE # 1__
4. Feet

5. 20’ in the main chart.
On the detailed charts on the back:
it varies. 10’ on Port Jeff
chart, 6’ on the Northport chart – so be careful as to what each chart shows.

6. Yes, 30’ 60’

7. Wrecks South-West of Darien’s Long Neck Point, and South of
Greenwich. No.

__FOR CHARTS WITH A DEFINITION OF__

__VARIATION IN THE COMPASS ROSE – DATED 2010 (13__

__° 30’w)__

__CLASS 1 – EXERCISE # 2__
1. Feet Low
Tide (Mean Lower Low Water MLLW – to
be exact)

2. 20 feet High
Tide (Mean High Water MHW – to be
exact)

3. Variation (to the nearest DEGREE) is 12 degrees West (The chart shows: Var 11deg. 47' 45" W in 7/14. This rounds "up" to 12 degrees)

__CLASS 1 – EXERCISE # 3 + HOMEWORK__
1. 160 degrees Magnetic
the Reciprocal is 340 degrees
Magnetic distance = 6.5 NM

It will take 65
minutes to get there at 6 kts. 60 d
= ST 60x6.5 or 930 / 6 = 65 minutes

2. 195 degrees Magnetic
the Reciprocal is 015 degrees
Magnetic distance = 4.6 NM

You were going 13.8 call it 14 knots 60 d = ST 60x 4.6 or
276 / 20 = 13.8 or 14 knots

3. 241 degrees Magnetic
the Reciprocal is 062 degrees
Magnetic distance = 2.0 NM

You will arrive at 1015 60 d = ST 60 x 2 = 120 120 / 4 =
30 minutes + 0945 = 1015

**+ + + + + +**

__FOR CHARTS WITH A DEFINITION OF__

__VARIATION IN THE COMPASS ROSE – DATED 7/16 of 13__

__° 21’ W)__

__CLASS 1 – EXERCISE # 2__
1.
Feet Low Tide (Mean Lower Low Water MLLW – to be exact)

2. 20
feet High Tide (Mean High Water MHW – to be exact)

3.
Variation (to the nearest DEGREE) in 2016 is 13. (in 7/16 it was

__13__**, – rounds DOWN to 13 degrees**__° 21’ W__

__CLASS 1 – EXERCISE # 3 + HOMEWORK__
1. 161
degrees Magnetic the Reciprocal
is 341 degrees Magnetic distance =
6.5 NM

It will
take 65 minutes to get there at 6
kts. 60 d = ST 60x6.5 or 930 / 6 = 65 minutes

2. 196
degrees Magnetic the Reciprocal
is 016 degrees Magnetic distance =
4.6 NM

You
were going 13.8 call it 14 knots 60
d = ST 60x 4.6 or 276 / 20 = 13.8 or 14 knots

3. 242
degrees Magnetic the Reciprocal is 062 degrees Magnetic distance =
2.0 NM

You
will arrive at 1015 60 d = ST 60 x 2 = 120 120 / 4 =
30 minutes + 0945 = 1015

**All answers are posted on the web – via a click off of the Squadron’s home page:**

**dsps.darien.org**

=======================================================================================================

=============================================================================================

__Here are the In-Class Exercises as well as the Homework.__

__Answers are at the end of this posting - just scroll down to see them.__

__Please check your answers before coming to class.__

__Let the instructor know if you have any problems or "issues" with either the Exercises or the Homework__

Please "do us a favor" - before checking your answers - click on the link below to send an e-mail to the server. This will allow us to gather some statistics as to what time students actually check their homework. Don't worry: we are not tracking "who did what" - that's beyond the purpose of all this. We are just trying to figure out "when" students actually check their homework, that's all! Thanks for participating ... "The Staff."

Please click here: HERE Thanks.

__IN – CLASS ASSIGNMENTS –__

__CLASS 2 - EXERCISE # 1__

There are two things you need to be able to do with your chart:

- when someone gives you a location in Latitude and Longitude, you need to know just where that is, on the chart, and

- when
you need to tell someone where you are, you need to be able to give
them the Latitude and Longitude coordinates of your location.

The next two exercises will give you confidence that you can easily do these tasks.

First
– lets say that you are near Greens Ledge Light – off of the Five Mile
River, and you hear the Coast Guard broadcast a notice that a ship is in
trouble at the following location(s). Find these locations and note
how far you are away from these ships:

__Latitude__

__Longitude__

__Miles away__

41 degrees, 00.6 minutes North 073 degrees 25.2 minutes West _____

40 degrees, 57.7 minutes North 073 degrees 29.2 minutes West _____

41 degrees, 00.2 minutes North 073 degrees 31.4 minutes West _____

Next
– you have left Greens Ledge Light behind you, and you have traveled to
some interesting points. What are your Lat/Long values when you are
at:

Bell Buoy R”2” south of Stratford Shoal Middle Ground?

____ deg ___.__ minutes North ____deg ___.__ minutes West

Bell Buoy R”42” off of the entrance to Mamaroneck Harbor?

____ deg ___.__ minutes North ____deg ___.__ minutes West

Whistle Buoy RW “BH” at the entrance to Bridgeport Harbor?

____ deg ___.__ minutes North ____deg ___.__ minutes West

__IN – CLASS ASSIGNMENTS –__

__CLASS 2 - EXERCISE # 2 – start in class – finish as homework__

1. Re-measure the distance from:

Darien’s G”1” to G”1” Fl G 2.5 sec at Eatons’ Neck _________NM

2.
Assuming the breeze is fair and you are in a sail boat that will move
along at 5.0 knots, use the formula 60 D Street (60*D=S*T) to
determine the number of minutes it will take to make this trip:

Darien’s G”1” to G”1” Fl G 2.5 sec at Eatons’ Neck _________Minutes @ 5.0 kts.

3.
In fairness to the non-sailors, lets assume that you are able to get up
on a plane and travel along at 18.5 knots in your runabout. Use the
same 60 D Street formula, this time with 18.5 as the value for Speed.

Darien’s G”1” to G”1” Fl G 2.5 sec at Eatons’ Neck _________Minutes @ 18.5 kts.

4.
You are returning to the Five Mile River from Port Jefferson when the
fog sets in at 1400. You take the necessary precautions 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 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 GPS
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 course (Magnetic) to Greens Ledge? __________

How far is it to the nearest nav aid 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 has closed in, 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 to Greens Ledge? ______ How long to get there? ________

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

5. You are just north of Lloyd Neck, your 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 R8 (Fl R 4s Bell) at Target Rock in Huntington Bay. What
compass course will you steer at this point so that you might get to
R8?________ degrees Magnetic

6.
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? ________

__CHART-WORK #2 – HOMEWORK # 2__

__The Voyage of the “__

**Vivid Imagination**”
You have agreed to return the sailboat “

**Vivid Imagination**” from Port Jefferson to it’s home port of Darien. The owner, your friend, has been called away on business and could not bring the boat back herself. The boat is in excellent condition, with a working radio, GPS, depth finder, and all of the standard equipment that is required. If your friend had failed to provide the required equipment, say, proper flares, and you were then stopped by the Coast Guard for a safety inspection, who would be responsible for the infraction ? _________
The
new GPS is working, yet you have been warned that it has been “a little
flaky.” Will you post a DR track on the charts, just in case the GPS
fails you on the trip? ________

There
was a thick fog yesterday, but today it is only hazy. From the dock at
Port Jeff you can just see the tower at the entrance (FL R 4 26ft
“2A”) How far away is it ? _________ (use the detail chart on the back
of the main chart to answer this question).

Next,
you lay out a course from RW “PJ” to the “11B” Gong near Cable and
Anchor Reef. Departing RW ”PJ” at 1300 with no breeze, you proceed
under power, at 5 knots. What is your computed ETA at the “11B” Gong
north of Eatons Neck? __________ What time should you begin to look for
the Gong, if you assume it will be visible at 2 miles? _______

After
an hour on course, you plot your DR and then take a little nap, leaving
the helm to the crew. An hour later the crew wakes you, reporting the
onset of thick fog. They have put up the radar reflector, donned PFD’s
and taken a quick fix from the GPS (although they did not get all the
numbers, they jotted down 40-59 and 73-20 on the flap of Fig Newton
box). You quickly interpret this as a Lat/Long position and see that
the plot is somewhat south of your intended course. Your crackerjack
crew reports: “Rather than steering the course you had given us (288
Mag) we’ve been steering more towards Eaton’s Neck, and not paying too
much attention until the fog started to come in.” UH OH! The GPS has
just gone on the blink and now shows all “9’s.” O.K. Your goal is
still to get to “11B.” You remember an excellent way to find it: you
notice that “11B” is on the 60’ depth contour line, so you decide to
continue on the same course (288 Mag) until you hit the 60’ sounding
line, and then turn to starboard and follow the 60’ line north to the
“11B” Gong. While running along the 60’ sounding line, when the
soundings show more than 60’ you turn to __________

Having
found “11B” you change course towards “R28C.” Immediately, you hear a
major league, loud, and close “one long, two short” blasts forward and
to starboard. It sounds “larger than a sailboat. What IS it?
__________ What channel on the VHF do you use first to call this other
vessel? __________ What do you say?__________

After
your conversation with the other vessel you decide that you should slow
down and turn to Starboard. What do you ask the other vessel?
__________

Soon, this large noise maker is off your Port Beam, and then it is heard more and more astern. What do you do now? __________

Eventually,
as you arrive in the vicinity of the “R28C” Bell, you do not hear it.
What can you do to make the bell sound?_____________

The fog lifts, you see Long Neck Point. It’s a good thing to be home with

**Vivid Imagination****!**
INSTRUCTORS – ANSWERS TO IN-CLASS EXERCISES – CLASS # 2

__CLASS 2 – EXERCISE # 1__
2.2 Nautical Miles (NM) R 28C – Cable & Anchor Reef

5.2 NM – G 15 North of Lloyd Point

4.2 NM – R32 South of Stamford – The Cows

41 degrees 03.0 minutes North 073 degrees 06.2 minutes West

40 degrees 55.5 minutes North 073 degrees 42.15 minutes West

41 degrees 06.2 minutes North 073 degrees 11.7 minutes West

__CLASS 2 – EXERCISE # 2__
1. 6.5 NM

2. 78 minutes 60 * 6.5 / 5 = 78

3. 21 minutes 60 * 6.5 / 18.5 = 21

4. 5.2 NM 52 MIN

328 degrees Magnetic

1.9 NM

19 MIN

Cable & Anchor Reef

1.3 NM 13 MIN

2.2 NM 22 MIN

2 minutes

5. N4

115 to clear N6, and then 145 to get to N8 - definitely NOT 133 which would take you into a dangerous area South of N6

6.
3.1 NM 1019 115 degrees Magnetic to Smith Reef, then 80
degrees Magnetic to Greens Ledge – do NOT take the straight line route

**– The Voyage of the “Vivid Imagination”**

__CHARTWORK # 2 – HOMEWORK # 2__
You are responsible

Yes – as always on a long trip

1.7 NM

1536
1512 60 * D = S* T D = 13.0 S = 5 T = ? T = 156
minutes if D = 2, T = 24, so subtract 24 from 1536 = 1512

Port (left)

Tug & Barge 13 then 16 I am a sailboat near 11B – do you have me on your radar?

I have changed course to pass port-to-port, do you still see me on radar?

Resume course and speed – making adjustments in DR track

Make circle – create a wake – (if necessary shut engine off, ) and listen for wave to rock the bell

CHAPTER 1 REVIEW QUESTIONS

1-A 2-D 3-B 4-B 5-C 6-B 7-B 8-B 9-A 10-B

11-B 12-D 13-B 14-D 15-B 16-C 17-C 18-C 19-D 20-C

21-A 22-A 23-C ((24-C))-not in 2012 edition

CHAPTER 2 REVIEW QUESTIONS

1-A 2-B 3-B 4-A 5-C 6-C 7-B 8-C 9-C 10-B

11-C 12-B 13-A 14-B 15-B 16-C 17-C 18-C 19-C 20-C

21-C 22-A 23-D 24-C 25-B 26-D 27-D 28-C 29-C 30-C

((31-C)) -only in 2012 edition

CHAPTER 3 REVIEW QUESTIONS

1-D 2-B 3-A 4-C 5-B 6-D 7-B 8-C 9-B 10-A

11-D 12-C 13-C 14-D 15-B 16-A 17-A 18-D 19-B 20-B

21-D 22-C 23-C 24-A 25-D 26-A 27-C 28-B 29-B 30-D

31-A 32-A 33-B

CHAPTER 4 REVIEW QUESTIONS

1-B 2-C 3-C 4-A 5-A 6-B 7-D 8-B 9-B 10-A

11-C 12-C 13-B 14-C 15-D 16-C 17-A 18-A 19-D 20-C

21-B 22-C 23-D 24-B 25-C 26-A 27-D 28-A 29-C 30-B

31-B 32-C 33-A