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Government Service Pennants and Pilot's Flag (Thailand)

Introduction
Customs Pennant
Immigration Service Pennant
Harbour Administration Pennant
Post Office Pennant 1936-1979
Pilot Flag 1917-
Pilot Flag 1916-1917
Pilot Flag 1891-1916

See also:

Introduction

I'm not sure if these are still used. I cannot find any documentation saying that they have been abolished. Source: Flaggenbuch 1939.

Calvin Paige Herring, 18 May 1998

Customs Pennant

1:2
Flag adopted 1936
image by Calvin Paige Herring and Eugene Ipavec

From the Singha Beer source:

The Custom Officer's Flag
This is a triangular flag with a base measuring half of each side. For one third of its length, it consists of the same colours that one finds on the Trairanga while the section that tapers off to a point is green. [Identical to the Customs Pennant above, but with a normal green (V) instead of a light one (V-); actually this image certainly has a 1:2 ratio, whereas the Singha Beer source image is a 2:3 burgee.]

This is an official flag, designed to be flown from a ship on a special mission in accordance with a special Royal Decree concerning Flag, issued in B.E.2479 [1936 AD]. Nowadays it is known as Custom Officer's Flag.

Santiago Dotor, 12 Nov 1999

Immigration Service Pennant

1:2
Flag adopted 1936
image by Calvin Paige Herring and Eugene Ipavec

From the Singha Beer source:

The Immigration Officer's Flag
This is a triangular flag, the proportion of base to height being 1:2. For one-third of its length it consists of the same colours as the Trairanga, which the section that tapers off to a point is yellow. [Identical to the Immigration Service Pennant above; actually this is more correct as it certainly has a 1:2 ratio, whereas the Singha Beer source image is a 2:3 burgee.]

This is an official flag, to be flown from the mast of a ship on an official mission in accordance with a special Royal Decree, issued in [B.E.] 2479 [1936 AD], concerning flags. Nowadays, it is known as the Immigration Officer's Flag.

Santiago Dotor, 12 Nov 1999

Harbour Administration Pennant

1:2
Flag adopted 1936
image by Calvin Paige Herring and Eugene Ipavec

From the Singha Beer source:

Harbour Master's Flag
This is a triangular flag with a proportion of base to height being 1:2. One-third of the flag is the same colours as the Trairanga, while the section tapering off to a point is white. [Identical to the Harbour Administration Pennant above; actually this is more correct as it certainly has a 1:2 ratio, whereas the Singha Beer source image is a 2:3 burgee.]

This is an official flag, to be flown from the mast of a ship on an official mission in accordance with a special Royal Decree, issued in B.E.2479 [1936 AD], concerning flags. Nowadays, it is known as the Harbour Inspector's Flag.

Santiago Dotor, 12 Nov 1999

Post Office Pennant 1936-1979

1:2
image by Calvin Paige Herring and Eugene Ipavec

From the Singha Beer source:

The Postal Officer's Flag
This is a triangular flag with a base proportion to the height, being 1:2. For on[e] third of its length, it consists of the same colours that one finds on the Trairanga, while the section that tapers off to the point is red. [Identical to the Post Office Pennant above; actually this is more correct as it certainly has a 1:2 ratio, whereas the Singha Beer source image is a 2:3 burgee.]

This was an official flag, designed to be flown from a ship on a special mission in accordance with a special Royal Decree concerning Flags, issued in B.E.2479. Its use was discontinued in B.E.2522 [1979 AD].

Santiago Dotor, 12 Nov 1999

Pilot Flag 1917-

2:3
image by Miles Li

From the Singha Beer source:

The Navigator's Flag (B.E.2460) [1917 AD]
This is a rectangular, flag on a proportion of 8 to 12 [ie. ratio 2:3]. Essentially the pattern is the same as that of the "Trairanga", with a white stripe, approximately 1/8 th of its width, running along the outer rim.

The navigator's Flag first made its appearance in accordance with the Royal Decree issued by King Rama V. In B.E.2460 [1917 AD], during the reign of King Rama VI, it underwent a change of design to emerge as the flag you see here – the version that has been in use ever since. The flag is flown from the bow whenever a ship is on a navigating mission. It also denotes the rank of navigator.

Santiago Dotor, 12 Nov 1999

Pilot Flag 1916-1917

image by Miles Li

Siam pilot flag as it appears in National Geographic 1917.

Phil Nelson, 30 Dec 1999

Pilot Flag 1891-1916

image by Jaume Ollé and Miles Li