Yosegaki Hinomaru

[Toritoribe]

There is only one slogan ？？(illegible)武運 above a signature at the lower left corner other than 祈武運長久 at the right end of the flag. The rest are all signatures.

 

[Trehocs]

Thanks Toritoribe

 

[Majestic]

Looks like its all names.
Oops, Toritoribe-san beat me to it. And he also picked out a phrase I missed.

 

[Trehocs]

Thank you Majestic!!

 

[Trehocs]

Hello Toritoribe

Please, could you help me with the translation of these slogans:

 

[Toritoribe]

一撃轟沈
Sink (the enemy's ships) by a single fire

自発態動
(most likely a miswriting of 自発能動 voluntary, active)

 

[Trehocs]

Thanks Toritoribe.

And these two?