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The Spray , 36-foot-9-inch sloop rebuilt by Joshua Slocum to sail '' single-handed '' around the world , compared to Abydos boats in ancient Egypt .
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kangarooistan
May 4, 2012, 7:17:18 PM5/4/12
to
experts debate the design of the Spray and Abydos boats sea
worthiness , sailing with the wind and currents
http://www.lib.utexas.edu/maps/world_maps/ocean_currents_1943.jpg
IMHO they could easily handle the open oceans , like a surfboard or
surf-boat ''rides the waves'' often seeking out huge waves for fun
http://www.dkgsurfboats.com/assets/images/surfboat_2.jpg ,
The Abydos boats were found in boat graves the west bank of the Nile.
[11] They are the royal boats intended for the Pharaoh in the
afterlife, they are his ships for travel west to meet the morning sun
rise east of Egypt . Umm el-Qa'ab, is a royal necropolis that is
about one mile from the Abydos boat graves where early pharaohs were
entombed. with a fleet of 14 boats buried in the desert sand. They
are not the oldest boat remains to be discovered in Egypt , but they
are extremely important to the history of Egyptian boat design and
nautical architecture.The midsection of this boat revealed the
construction methods used and confirmed the oldest ‘planked’
constructed boat yet discovered. No.10’s construction revealed that
the boat was built from the outside in, there was no internal frame.
Averaging 75’ long and 7’-10’ wide at their greatest width, these
boats were only about two feet deep with narrow prow and stern.
http://en.wikipedia.org/wiki/Ancient_Egyptian_Boats_%28First_Dynasty%29_%E2%80%93_Abydos
The Spray was a 36-foot-9-inch (11.20 m) oyster sloop rebuilt by
Joshua Slocum and used by him to sail '' single-handed '' around the
world, the first known and documented voyage of its kind.
Length: 39 feet 9 inches,Beam: 14 feet 2 inches,Depth of hold: 4 feet
2 inches
Propulsion: sail only
Cipriano Andrade, Jr., engineer and yacht designer, said of Spray:
“After a thorough analysis of Spray's lines, I found her to have a
theoretically perfect balance. Her balance is marvelous — almost
uncanny. Try as I would — one element after another — they all swung
into the same identical line. I attacked her with proportional
dividers, planimeter, rotameter, Simpson's rule, Froude's
coefficients, Dixon Kemp's formulae, series, curves, differentials,
and all the appliances of modern yacht designing, and she emerged from
the ordeal a theoretically perfect boat. For when she is underway
every element of resistance, stability, weight, heeling effort, and
propulsive force is in one transverse plane, and that plane is the
boat's midship section. I know of no similar case in the whole field
of naval architecture, ancient or modern.”[7]:281-299
In his book "Captain Joshua Slocum", Joshua's son Victor Slocum stated
that "the ballast was concrete cement, stanchioned down securely to
ensure it against shifting should the vessel be hove on her beam-ends.
There was no outside ballast whatever. The Spray could have been self-
righting if hove on her beam-ends, a fact that was proven, since, by
an experiment on an exact duplicate of the original boat and ballasted
just like her. The test boat was hove down with mast flat to the water
and when released righted herself."[7]:280
http://en.wikipedia.org/wiki/Spray_%28sailing_vessel%29#Self-steering_ability
http://en.wikipedia.org/wiki/Spray_%28sailing_vessel%29
.
captain Bligh's epic voyage in 1814 , '' mutiny of the bounty ''
In all, 18 of the loyal crew were in the 23 foot launch with
captain Bligh about 30 nautical miles (56 km) from Tofua The only
casualty during this voyage was a crewman, John Norton, who was stoned
to death by some natives of Tofua. Bligh then navigated the 23-foot
(7 m) open launch , 19 crew , on a 47-day voyage across the pacific
to Timor . Equipped with a quadrant and a pocket watch and with no
charts or compass, he recorded the distance as 3,618 nautical miles
(6,710 km).http://en.wikipedia.org/wiki/Mutiny_on_the_Bounty#Bligh.
27s_epic_voyage
.
worthiness , sailing with the wind and currents
http://www.lib.utexas.edu/maps/world_maps/ocean_currents_1943.jpg
IMHO they could easily handle the open oceans , like a surfboard or
surf-boat ''rides the waves'' often seeking out huge waves for fun
http://www.dkgsurfboats.com/assets/images/surfboat_2.jpg ,
The Abydos boats were found in boat graves the west bank of the Nile.
[11] They are the royal boats intended for the Pharaoh in the
afterlife, they are his ships for travel west to meet the morning sun
rise east of Egypt . Umm el-Qa'ab, is a royal necropolis that is
about one mile from the Abydos boat graves where early pharaohs were
entombed. with a fleet of 14 boats buried in the desert sand. They
are not the oldest boat remains to be discovered in Egypt , but they
are extremely important to the history of Egyptian boat design and
nautical architecture.The midsection of this boat revealed the
construction methods used and confirmed the oldest ‘planked’
constructed boat yet discovered. No.10’s construction revealed that
the boat was built from the outside in, there was no internal frame.
Averaging 75’ long and 7’-10’ wide at their greatest width, these
boats were only about two feet deep with narrow prow and stern.
http://en.wikipedia.org/wiki/Ancient_Egyptian_Boats_%28First_Dynasty%29_%E2%80%93_Abydos
The Spray was a 36-foot-9-inch (11.20 m) oyster sloop rebuilt by
Joshua Slocum and used by him to sail '' single-handed '' around the
world, the first known and documented voyage of its kind.
Length: 39 feet 9 inches,Beam: 14 feet 2 inches,Depth of hold: 4 feet
2 inches
Propulsion: sail only
Cipriano Andrade, Jr., engineer and yacht designer, said of Spray:
“After a thorough analysis of Spray's lines, I found her to have a
theoretically perfect balance. Her balance is marvelous — almost
uncanny. Try as I would — one element after another — they all swung
into the same identical line. I attacked her with proportional
dividers, planimeter, rotameter, Simpson's rule, Froude's
coefficients, Dixon Kemp's formulae, series, curves, differentials,
and all the appliances of modern yacht designing, and she emerged from
the ordeal a theoretically perfect boat. For when she is underway
every element of resistance, stability, weight, heeling effort, and
propulsive force is in one transverse plane, and that plane is the
boat's midship section. I know of no similar case in the whole field
of naval architecture, ancient or modern.”[7]:281-299
In his book "Captain Joshua Slocum", Joshua's son Victor Slocum stated
that "the ballast was concrete cement, stanchioned down securely to
ensure it against shifting should the vessel be hove on her beam-ends.
There was no outside ballast whatever. The Spray could have been self-
righting if hove on her beam-ends, a fact that was proven, since, by
an experiment on an exact duplicate of the original boat and ballasted
just like her. The test boat was hove down with mast flat to the water
and when released righted herself."[7]:280
http://en.wikipedia.org/wiki/Spray_%28sailing_vessel%29#Self-steering_ability
http://en.wikipedia.org/wiki/Spray_%28sailing_vessel%29
.
captain Bligh's epic voyage in 1814 , '' mutiny of the bounty ''
In all, 18 of the loyal crew were in the 23 foot launch with
captain Bligh about 30 nautical miles (56 km) from Tofua The only
casualty during this voyage was a crewman, John Norton, who was stoned
to death by some natives of Tofua. Bligh then navigated the 23-foot
(7 m) open launch , 19 crew , on a 47-day voyage across the pacific
to Timor . Equipped with a quadrant and a pocket watch and with no
charts or compass, he recorded the distance as 3,618 nautical miles
(6,710 km).http://en.wikipedia.org/wiki/Mutiny_on_the_Bounty#Bligh.
27s_epic_voyage
.
kangarooistan
May 8, 2012, 9:26:45 AM5/8/12
to
On May 5, 8:17 am, kangarooistan <kangarooist...@gmail.com> wrote:
> experts debate the design of the Spray and Abydos boats sea
> worthiness , sailing with the wind and currentshttp://www.lib.utexas.edu/maps/world_maps/ocean_currents_1943.jpg
> experts debate the design of the Spray and Abydos boats sea
> IMHO they could easily handle the open oceans , like a surfboard or
> surf-boat ''rides the waves'' often seeking out huge waves for funhttp://www.dkgsurfboats.com/assets/images/surfboat_2.jpg,
>
> The Abydos boats were found in boat graves the west bank of the Nile.
> [11] They are the royal boats intended for the Pharaoh in the
> afterlife, they are his ships for travel west to meet the morning sun
> rise east of Egypt . Umm el-Qa'ab, is a royal necropolis that is
> about one mile from the Abydos boat graves where early pharaohs were
> entombed. with a fleet of 14 boats buried in the desert sand. They
> are not the oldest boat remains to be discovered in Egypt , but they
> are extremely important to the history of Egyptian boat design and
> nautical architecture.The midsection of this boat revealed the
> construction methods used and confirmed the oldest ‘planked’
> constructed boat yet discovered. No.10’s construction revealed that
> the boat was built from the outside in, there was no internal frame.
> Averaging 75’ long and 7’-10’ wide at their greatest width, these
> boats were only about two feet deep with narrow prow and stern.http://en.wikipedia.org/wiki/Ancient_Egyptian_Boats_%28First_Dynasty%...
> surf-boat ''rides the waves'' often seeking out huge waves for funhttp://www.dkgsurfboats.com/assets/images/surfboat_2.jpg,
>
> The Abydos boats were found in boat graves the west bank of the Nile.
> [11] They are the royal boats intended for the Pharaoh in the
> afterlife, they are his ships for travel west to meet the morning sun
> rise east of Egypt . Umm el-Qa'ab, is a royal necropolis that is
> about one mile from the Abydos boat graves where early pharaohs were
> entombed. with a fleet of 14 boats buried in the desert sand. They
> are not the oldest boat remains to be discovered in Egypt , but they
> are extremely important to the history of Egyptian boat design and
> nautical architecture.The midsection of this boat revealed the
> construction methods used and confirmed the oldest ‘planked’
> constructed boat yet discovered. No.10’s construction revealed that
> the boat was built from the outside in, there was no internal frame.
> Averaging 75’ long and 7’-10’ wide at their greatest width, these
> .
> captain Bligh's epic voyage in 1814 , '' mutiny of the bounty ''
> In all, 18 of the loyal crew were in the 23 foot launch with
> captain Bligh about 30 nautical miles (56 km) from Tofua The only
> casualty during this voyage was a crewman, John Norton, who was stoned
> to death by some natives of Tofua. Bligh then navigated the 23-foot
> (7 m) open launch , 19 crew , on a 47-day voyage across the pacific
> to Timor . Equipped with a quadrant and a pocket watch and with no
> charts or compass, he recorded the distance as 3,618 nautical miles
> (6,710 km).http://en.wikipedia.org/wiki/Mutiny_on_the_Bounty#Bligh.
> 27s_epic_voyage
> .
Ancient Egyptians boat builders understood the '' design principles
> captain Bligh's epic voyage in 1814 , '' mutiny of the bounty ''
> In all, 18 of the loyal crew were in the 23 foot launch with
> captain Bligh about 30 nautical miles (56 km) from Tofua The only
> casualty during this voyage was a crewman, John Norton, who was stoned
> to death by some natives of Tofua. Bligh then navigated the 23-foot
> (7 m) open launch , 19 crew , on a 47-day voyage across the pacific
> to Timor . Equipped with a quadrant and a pocket watch and with no
> charts or compass, he recorded the distance as 3,618 nautical miles
> (6,710 km).http://en.wikipedia.org/wiki/Mutiny_on_the_Bounty#Bligh.
> 27s_epic_voyage
> .
'' needed for ocean going vessels , PLEASE , take a look at this
modern surf boat , and keep it in mind when looking at ancient
Egyptian boats from 4000 years ago ,
http://mikeavalon.files.wordpress.com/2010/11/south-curl-curl-surfboat-at-freshwater-beach.jpg
take special notice of the ratios used , width , length and depth ,
and steering gear , IDENTICAL TO THOSE IN COMMON USE 5000 years
ago , and they go very very fast indeed , almost effortlessly with
a small sail when going with the trade winds and currents , a boat
like this could very easily complete global sailing , now or 4000 plus
years ago many similar once have done so [ see the ship used by
first solo sailor , Mr Joshua Slocum , very similar ratios 36 ft long
10 wide , 4 deep , no effort to sail the globe solo ]
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