The Navigation Challenge

In an effort to improve our members knowledge of Nautical Navigation, we will pose various navigation questions for you to answer.

Last month you were asked to find your position using 2 bearings and how far are you from Santa Rosalia.

Quiz 1
You and your crew left Las Cocinas anchorage around 9 pm on Wednesday night, headed for Santa Rosalia. The night was clear with just a tinge of Autumn in the air.  The seas were fairly calm and the wind was between 10-15 knots. The stars were very bright and plentiful, so you pushed back the bimini to take in the wonderful night sky. You and your crew stuck to a 3 hour watch and so were fairly well rested when the sun came up around 6 am.
As you were brewing your morning coffee, you noticed that the GPS was not turned on.  No problem – an easy fix, just push the button.  But that little button would not work. Ah, but again, no problem, you have plenty of batteries…Oops, the GPS still does not turn on.  As you shake the GPS to try to bring it to life, you notice that water starts spilling out and realize that there is no hope of the GPS working in the near future.
Well, now you’re in the middle of the Sea of Cortez, hoping to have a good dinner in Santa Rosalia.  How do you get there? The air is dry so you can see pretty far into the distance.  The northern tip of Isla San Pedro Nolasco is to your port and the northern tip of Isla Tortuga is in front of you.  Fortunately, you had the good sense to stow your hand-held compass in a safe, dry place.  So you pull out the compass and take compass bearings on these two islands:
Isla San Pedro – 66 degrees magnetic
Isla Tortuga – 151 degrees magnetic 

The challenge – How far is Santa Rosalia and what heading (magnetic) do you take to get there, assuming the wind is perfect for a direct sail?

Quiz 2

You now know where you are and what direction to sail to get to Sant Rosalia.
The original Bearings were taken at 0630.  We assume the magnetic variation is 11°E with no annual change. also the compass you are using has no deviation.
The wind is steady from the East and the sea is calm to moderate.

After sailing for some time you take a bearing on Isla Tortuga.
You plot this on your chart as 123°(True) 1000Hr.
The question is??
How far have you traveled and what was you average speed.

E-Mail your answer to NavQuest@Tucsonsailingclub.com