There are countries, for use on land and at sea several Flags have. In many books and other publications, but is often only the Listed national flag on land with no indication that there is a separate flag for the voyage there. Therefore, for the proper use of flags has been developed the following scheme:
The fields mean:
national and merchant
BF = Civil flag, national flag and for private use HF = merchant flag, national flag for navigation DF = service flag, flag for customs, police and other authorities CF = war flag, coat of arms for military and naval
More extensive books and publications, which also usually well based on a scientific basis, using this scheme. There are inserted then only points in the appropriate field.
As the following examples is the use of Scheme, together with the ratio of height to length next to the image of the flag.
In this case, that means for the German flag: She has a format in the ratio 3: 5 and is the National and merchant flag on land and on sea.
In this catalog is, however, on this scheme omitted, because it are only flags for the ship's models, ie, flags at sea.