According to Album des Pavillons[pay00], the Greek jack is a blue square flag with a white cross throughout. The width of the cross is 1/5th of the hoist width. Željko Heimer, 10 October 2001
Album des Pavillons[pay00] shows the masthead pennant as a long triangular blue flag (~2:15) with a white Greek cross near the hoist. Željko Heimer, 13 October 2001
The "Γενικό Επιτελείο Ναυτικού, ΓΕΝ" (English: Navy General Staff) was established by law on 21 July 1907 and organized by Royal Decree on 12 November of the same year as "Αρχηγείο Βασιλικού Ναυτικού" (English: Royal Naval Headquarters).
The flag is a horizontal background featuring the CoA composed of a cross, an anchor and a trident, featuring on top the Greek initials after its former denomination, Royal Hellenic Navy (Βασιλικόν Ναυτικόν, Vasilikón Naftikón, abbreviated ΒΝ) and above that the motto "Μέγα τὸ τῆς θαλάσσης κράτος" (English: "Great is the maritime state"), inside a shield. The color horizontal stripes are a middle red stripe with two equally sized white stripes and a blue outline, all horizontally layed and behind the CoA. Esteban Rivera, 10 March 2023 Sources:
![[Flag of Greece]](../images/g/gr.gif)
![[Greek jack]](../images/g/gr~jack.gif)
image by Željko Heimer, 10 October 2001![[Masthead pennant]](../images/g/gr~cp.gif)
![[Flag of the Hellenic Navy General Staff]](../images/g/gr_hn-gs.gif)
![[Hellenic Navy General Staff Coat of Arms]](../images/g/gr_hn-gs).gif)
