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Replicas of Ancient Nautical Navigational Instruments

comments (5) November 11th, 2011 in Reader's Gallery

Saville Saville, member
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 I made this replica of a 30 minute Watch Glass recovered from the wreck of HMS Invincible. Invincible sank in February 1758 when she grounded on a sandbank in the Solent.
Backstaff - Construction complete and ready for finishing.
Early Davis Backstaff
Chip log, Traverse Board, 14 and 28 second sandglasses
Replica of a 15th Century Italian Traverse Board
 I made this replica of a 30 minute Watch Glass recovered from the wreck of HMS Invincible. Invincible sank in February 1758 when she grounded on a sandbank in the Solent. - CLICK TO ENLARGE

 I made this replica of a 30 minute Watch Glass recovered from the wreck of HMS Invincible.

Invincible sank in February 1758 when she grounded on a sandbank in the Solent.

Photo: Photo taken by Gregg Germain
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I am interested in ancient nautical navigational techniques. To study them I build my own replicas of navigational instruments from the 15th through 19th century.


Design or Plan used: My own design
posted in: Reader's Gallery
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Comments (5)

Saville Saville writes: Yes the rope is long spliced hemp. Grommets were made at either end by pinching a loop and securing it with marline.
Posted: 9:32 am on November 14th

OldShavings OldShavings writes: Makes sense. The rope spliced? Or relaid like when making a grommet? I'm not sure what you mean by continuous.
Posted: 8:44 pm on November 13th

Saville Saville writes: And thanks for your kind words

Posted: 12:34 pm on November 12th

Saville Saville writes: It's hard to tell from that photo but the rope is continuous with two eyes at either end. That way you can turn the glass upside down to start the timing. There is enough distance in the rope for the glass to slide along the rope. That's the source of the stray fibers.

Posted: 12:34 pm on November 12th

OldShavings OldShavings writes: Wow. Really admiring your work. Great woodworking projects.

Petty question for you: is there a reason you don't singe off (or otherwise remove)the stray fibers from your rope?
Posted: 8:22 am on November 12th

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