Maximinus II VIRTVS EXERCITVS armor decoration on reverse

[Victor]

I have had this coin for a couple of years and could never get a handle on the decoration of the armor on the reverse. Recently looking at it and it seems to be a figure in the prow of a ship holding wreath to left and maybe palm over shoulder and behind altar(?)





Maximinus II
A.D. 309- 310     26mm      6.4g
MAXIMINVS NOB CAES; Helmeted and cuirassed bust left, holding spear over his right shoulder and shield decorated with two horsemen with Draco standards riding to left, four enemies below them; on cuirass, gorgoneion; on helmet, Sol standing facing in quadriga, raising his right hand in salute and holding globe in his left, around, stars and crescent, crest ending in griffin.
VIRTVS EXERCITVS; Mars standing front, head to left, resting right hand on decorated shield and holding spear in left; in field to left, lighted altar; B in right field.
In ex. ANT   
RIC VI Antioch 125


closeup which I am not sure helps