Sextant
Sad, that I still have no idea how to use one of these. I found this video quite helpful in describing how to get a rough fix on location. I am sure this is becoming a lost art with all of the available technology today. However, I think of it as an essential skill in navigation.
Quite an informative video from YachtingMonthly’s YouTube feed
[youtube http://www.youtube.com/watch?v=PK6v-833dkc&w=560&h=315]
This may have motivated me to sign up for classes.

Harken 38 mm Upright Lead Big Bullet Block
Harken Two-Speed Mainsheet System 3:1, 6:1
Harken 38 mm Big Bullet Block - Becket, Shackle
Harken 38 mm Big Bullet Block - Shackle
Harken 38 mm Big Bullet Block - Swivel
Harken 38 mm Big Bullet Block - Becket
Harken 38 mm Triple Big Bullet Block
Harken 38 mm Double Upright Lead Big Bullet Block
Harken 3.00" Double Block - Swivel, Becket, Cross Block
Harken 29 mm Triple Bullet Block
Harken 29 mm Upright Lead Bullet Block
Harken 38 mm Big Bullet Block - Swivel, Becket
Schaefer Wire Block - 3 1/4" Aluminum Sheave, Eye Jaw