Bidya
Sriwattanasarn
Faculty of
Arts and Sciences,
Dhurakij
Pundit University.
History  and Physical Analysis
Last
month, the author was in touch with by an anonymous  who owned the ancient cannon  accidentally discovered  from the fishery in the Andaman Sea, not
far from Ranong Province, the  upper
Southern Thailand:  part of the ancient  sea route of the Portuguese during  16-19 Centuries.  
Fundamentally,  the mentioning cannon is classified as  the Cast Bronze Verso type. The Cast Bronze
Versos were generally  used by  Spaniard and Portuguese bombardiers
in their  forts and ships. Below the
mount of the muzzle, there are the coat of arms of Portuguese and the symbol of
the  armillary sphere (celestial sphere).  The one that found in
the Andaman sea   is reportedly 437 kilograms of weight with 2.5
meters  of length.
Depending on my own study and comparison, the method is based on photos and
documents approaching from many sources, 
 the author
believed  that  the Andaman cannon might be casted in
the lately period of the  16th  century. 
In
Thailand, There are at least 2 the Cast Bronze Versos has been positioned in
front of the Villa of the Ambassador of Portugal to Bangkok at the  similar size  of the Andaman cannon. 
Result of the physical analysis, traces of
deterioration on the muzzle, especially, over the edge of the coat of arms  of Portugal and the armillary sphere could be
viewed rather clearly deep intoits texture. 
Succinct
chronology of the Portuguese Cannon
Type
and development of  Spain and Portuguese
cannons comparison with western cannons in the Mediterrenean.(http://www.angelfire.com/ga4/guilmartin.com/Weapons.html)
1. (From left to right) The Spain- Portuguese Wrought-iron Versowith Removable wrought-iron Chamber.
2.
(From left to right)
Spain -Portuguese Wrought-Iron Verso  in the 15th century, similar
to the Falconetes.
3.
(From left to right)
Spain -Portuguese Cast bronze Verso in early the 16th
century.
Reconstruction of half bronze cast cannon of  western Mediterranean from archives of the 16th
century.  
The
sketch of the Esmeril of Spain, its muzzle was similar to the Farangi
of Turkey and the Moschetti of Venice.
The
Morterete of Spain in the middle of the 16th Century looked
very similar to the Bombardelle of 
Venice and  Darbezy of
Turkey. 
The
Portuguese swivel verso at the British Museum.
Below
the mouth of the muzzle, the coat of arms of Portugal and the symbol of the Armillary
sphere with the longitude began from the upper left
to the lower right. 
An
armillary sphere is a model of the celestrial sphere. The drawing is from
Christoph Clavius commentary on the book De Sphaera from 1581.
(http://eat-a-bug.blogspot.com/2009/10/armillary-sphere.html)
The opened chamber verso found at Dhlo,
Dambarare, Portuguese Settlement in Zimbabwe.  ( Market , Feira and Fort
in Zimbabwe1693.)
One
of the Portuguese cannon (verso) in
front of the villa of the ambassador of Portugal to Bangkok has been
conserved  to protect any further deterioration.
The
symbol of the  coat of arms of Portugal
and the armillary sphere on the muzzle of a 
Portuguese cannon in front of the villa of the
ambassador of Portugal to Bangkok.  The
cross line  that represent the global
longitude  mostly  began  
from the upper  left to the lower  right, for this one, it drew from the right
to the left instead. 
The
Portuguese opened chamber cannon (verso) 
from the Andaman, 
437
kg.
Weight  with 2.50 meters length .
Movable
chamber of the Andaman cannon.
The
pivots over the opened chamber to place on the basement or a swivel- post mount
to the right direction.
Coat
of arm of Portugal and the symbol of the armillary sphere (  The cross line  drew from the left to the right as usual.)
Rough
sketching  of the coat of arms of
Portugal and the armillary sphere on the muzzle of the cannon of the 17th
century of the fort of Diu (India) , former colony of Portugal ( the
longitude lined from the left to the right )
Coat of Arms of the Kingdom of Portugal (1640-1910)
Coat of arms of Portugal on the present day Portugal flag are composed
of  red escutcheons decorated with 7 golden closed
castles[1] and symbol of 5 
silver bezants, represented the authority of the Portuguese suzerain to
issue currency. Beneath the coat of arms is the symbol of power of Portugal
over the world, the armillary sphere.
Conclusion
            From the
photos analysis,  the  severe deteriorated condition,
especially,  over  the coat of arms and the armillary sphere of
the Andaman  Portuguese cannon,  indicates itself as the  age of the positioning ones at the villa of
the ambassador of Portugal to Bangkok, Thailand, in the exactly  lately the 16th century.  
References
-Bidya
Sriwattanasarn,
ตราแผ่นดินโปรตุเกสที่หน้าจั่วของจวนเอกอัครราชทูตโปรตุเกส ณ กรุงเทพฯ(Portuguese
Coat of Arms at the Villa of the Ambassador of Portugal in Bangkok),  in http://siamportuguesestudy.blogspot.com/2011/05/portuguese-coat-of-arms-at-villa-of.html
May
17 , 2011
.......................................................ปืนใหญ่หน้าสถานทูตโปรตุเกส2
(Cannons in the Embassy of Portugal in Bangkok ii) in http://siamportuguesestudy.blogspot.com/2011/03/2.html,  March 2, 2011
-JOHN FRANCIS GUILMARTIN JR.,
THE WEAPONS OF SIXTEENTH CENTURY WARFARE AT SEA, http://www.angelfire.com/ga4/guilmartin.com/Weapons.html 
-DIU FORT
CANNONS AND HOWITZER GUNS.wmv
[1]
Symbol of  7 castles have been used since the
reign of  Sebastião I,  1557-1578. (http://en.wikipedia.org/wiki/Sebastian_I)






















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