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- From: Charles Rollhauser <rollhaus@oasys.dt.navy.mil>
- Subject: Re: triremes
- Message-ID: <C1H357.FH3@law7.DaytonOH.NCR.COM>
- Sender: military@law7.DaytonOH.NCR.COM (Sci.Military Login)
- Organization: Carderock Division, NSWC, Bethesda, MD
- References: <C15y9w.K6L@law7.DaytonOH.NCR.COM> <C1D8LJ.A4F@law7.DaytonOH.NCR.COM>
- Date: Tue, 26 Jan 1993 17:55:55 GMT
- Approved: military@law7.daytonoh.ncr.com
- Lines: 70
-
-
- From Charles Rollhauser <rollhaus@oasys.dt.navy.mil>
-
-
- I just found my reference on triremes. It's based on a talk by
- John Coates and given in DUNFERMLINE, Scotland at a conference on Marine
- Structures in May of 1991. Here are some highlights.
-
- ABSTRACT
-
- The Greek Trireme oared warship was the fastest of all past types
- of oared ships and its design was extreme, within the materials
- and techniques available at the time. It was powered by the
- largest practicable number of single-manned oars, accommodated in
- a long slender and heavily stressed timber hull of shell
- construction. To keep hull bending stresses within acceptable
- limits, Triremes were fitted with large tensioned ropes having the
- same purpose as steel tendons in pre-stressed concrete beams
- today.
-
- The Greek Trireme was lightly built and armed only with a ram. The
- Trireme's objective was to ram enemy ships without being rammed itself.
- This called for an agile ship, with a skilled commander and crew. The
- oarsmen were NOT slaves. At the height of its power in the fifth century
- BC, the Athenian Navy had regular training, and achieved exchange rates in
- battle of three to one. During the fourth century, skilled oarsmen became
- scarcer and a trend started towards larger slower oared ships whose main
- armament was a body of troops. These heavier triremes were the most
- numerous and fastest ships in the Roman fleet.
-
- The Greek Trireme had 170 individually manned oars on three levels.
- Triremes could maintain a speed of seven knots for periods over 24 hours.
- Sprint speeds of nearly 10 knots are possible. (A reproduction reached
- speeds in excess of 9 knots.)
-
- The rest of the article is a Naval architect's/historian's delight. It
- gives drawings and photographs showing the reconstruction of the Trireme
- OLYMPIAS.
-
- For the serious student, my source is the conference proceedings,
- ADVANCES IN MARINE STRUCTURES - 2, edited by C.S. Smith and R.S. Dow
- Elsevier Applied Science, London and New York 1991. ISBN 1-85166-627-3
-
- Chuck
-
-
- -------------------------------------------------------------------------
- Chuck Rollhauser | Any opinions expressed are strictly
- Carderock Division | my own, not CDNSWC's and NOT the
- Naval Surface Warfare Center | Navy's!
- -------------------------------------------------------------------------
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