I guess the 'Marshal' part shouldn't be included since it's the rank of his namesake so just Shaposhnikov then...
S -- As much as he's loyal to the Pacific Fleet, part of him wants to return to the Baltic fleet which based in his hometown. And he's quite certain if he transferred back to the Baltic Fleet, there might be a chance for him to become their flagship. The Baltic Fleet's current's flagship, Nastoychivyy, is Bystryy's younger brother and is smaller than him despite also being a destroyer. He believes it's not uncommon that flagship rank can be granted to the largest combat ship in the fleet.
H -- What he would describe as 'putting Vovka in his place', aka terrorizing Vovka to stay off his two younger brothers. The following sequences could be from merely one-sided nagging to full blown quarrel, depends on how Vovka will react to the 'bait'.
A -- Too serious for everyone's mental health tbh, lol. Has a really high morals and strong sense of justice that sometimes applied to things that weren't called for.
P -- Probably his reddish blond hair. Strangely enough there isn't anyone else who shares a similar color in his fleet though there's a few of them in other fleets.
O -- Because his RL counterpart was once caught obliterating a tiny Somalian pirates' dinghy with an AA gun on a video clip which is now widely available on youtube. He has been a butt of a joke about beng 'international star', 'internet idol' and 'youtube viral achiever' by his fleet mates since that clip came out. Thus he has been grumbling about wanting to have youtube blocked from the internet network in his base. XD
S -- Despite how stubborn he is concerning the 'lineages' illusion he came up, deep down he regrets it that most likely his two older brothers couldn't 'pass on' peacefully because they feared for the future that without them, no one would have the ability to stop Shaposhnikov and Vovka from constantly fighting.
H -- Trying to find a way to effectively make his youngest brother, Yurka, giving up his cup ramen addiction.
N -- Making peace with vovka and allowing his two younger brothers to openly call Vovka 'older brother'.
I -- Overall above avarage, though he often ruins that impression with his tendency to harass Vovka every so often.
K -- Doesn't have one. Unless you consider an extreme form of being overly possessive of his younger brothers (though strictly in platonic, non-romantic and non sexual way) a kink?
O -- Currently of all active ships in his class, he's the only one whose name has the rank 'marshal'. The rest are mostly 'Admirals', 'Vice-Admiral' and a city name.
V -- Not quite sure how to describe it. Here's the sample.