An image of SM UB-3's sister boat SM UB-4

• Herzog, Bodo; Fechter, Helmut (1993). Deutsche U-Boote: 1906–1966 (in German). Erlangen Müller. ISBN  9783860700365. OCLC  165221847. via http://www.dreadnoughtproject.org/models/ships/SMS_UB_2/photos/ ( direct picture link)
• Williamson, Gordon (2002). U-boats of the Kaiser's Navy. Oxford: Osprey. p. 12. ISBN  9781841763620. OCLC  48627495.

SM UB-3

not cropped: the photograph was already tightly cropped. any further cropping would eliminate portions of the submarine, which is the subject of the image

yes, the image is considerably smaller than the size published at the source

To depict a submarine similar to UB-3, of which there are no known free images

No. No submarines of the class survived beyond 1920 so any further photography is impossible

This photograph may, in fact, be public domain, but without knowing its publication history (other than the source listed above, the publication history is unknown) or the photographer (unknown), no determination may easily be made.

This is a copyrighted and/or unlicensed photograph depicting a watercraft. It does not fall into one of the blanket fair use categories listed at Wikipedia:Fair use#Images, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work in the article " SM UB-3" to illustrate the watercraft in question where no free equivalent is available or could be created that would adequately give the same information on the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation, qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Fair use and Wikipedia:Copyrights. Fair use //en.wikipedia.org/wiki/File:German_Type_UB_I_submarine.jpg true

Image of SM UB-4

• Herzog, Bodo; Fechter, Helmut (1993). Deutsche U-Boote: 1906–1966 (in German). Erlangen Müller. ISBN  9783860700365. OCLC  165221847. via http://www.dreadnoughtproject.org/models/ships/SMS_UB_2/photos/ ( direct picture link)
• Williamson, Gordon (2002). U-boats of the Kaiser's Navy. Oxford: Osprey. p. 12. ISBN  9781841763620. OCLC  48627495.

SM UB-4

not cropped: the photograph was already tightly cropped. any further cropping would eliminate portions of the submarine, which is the subject of the image

yes, the image is considerably smaller than the size published at the source

To depict the submarine, of which there are known free images

No. No submarines of the class survived beyond 1920 so any further photography is impossible

This photograph may, in fact, be public domain, but without knowing its publication history (other than the source listed above, the publication history is unknown) or the photographer (unknown), no determination may easily be made.

This is a copyrighted and/or unlicensed photograph depicting a watercraft. It does not fall into one of the blanket fair use categories listed at Wikipedia:Fair use#Images, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work in the article " SM UB-4" to illustrate the watercraft in question where no free equivalent is available or could be created that would adequately give the same information on the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation, qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Fair use and Wikipedia:Copyrights. Fair use //en.wikipedia.org/wiki/File:German_Type_UB_I_submarine.jpg true

An image of SM UB-6's sister boat SM UB-4

• Herzog, Bodo; Fechter, Helmut (1993). Deutsche U-Boote: 1906–1966 (in German). Erlangen Müller. ISBN  9783860700365. OCLC  165221847. via http://www.dreadnoughtproject.org/models/ships/SMS_UB_2/photos/ ( direct picture link)
• Williamson, Gordon (2002). U-boats of the Kaiser's Navy. Oxford: Osprey. p. 12. ISBN  9781841763620. OCLC  48627495.

SM UB-6

not cropped: the photograph was already tightly cropped. any further cropping would eliminate portions of the submarine, which is the subject of the image

yes, the image is considerably smaller than the size published at the source

To depict a submarine similar to UB-6, of which there are no known free images

No. No submarines of the class survived beyond 1920 so any further photography is impossible

This photograph may, in fact, be public domain, but without knowing its publication history (other than the source listed above, the publication history is unknown) or the photographer (unknown), no determination may easily be made.

This is a copyrighted and/or unlicensed photograph depicting a watercraft. It does not fall into one of the blanket fair use categories listed at Wikipedia:Fair use#Images, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work in the article " SM UB-6" to illustrate the watercraft in question where no free equivalent is available or could be created that would adequately give the same information on the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation, qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Fair use and Wikipedia:Copyrights. Fair use //en.wikipedia.org/wiki/File:German_Type_UB_I_submarine.jpg true