Well this is going to be a rather long post about how I feel about the mod in its current state. I am by no means an expert of the game but I consider myself an experienced battleship player who has played 4-5 years of the various versions back in the days when garena had wc3 lobbies, including the less well known but very well made Battleship Crossfire.

Firstly, compasses are too strong. A free blink that can be obtained at 3 minutes is ridiculously good, but that also means that after 3 minutes everyone would have a free escape mechanism that is an absolute nightmare to punish unless you have hard cc that lasts long enough to kill the player without him utilizing his free escape.

But of course, you do, because thats the second problem I find with the game. All the crowd control implemented in this game lasts so long that just 2 of them chained together means instant death for even the toughest ships in the game. And the boarding ability on the Golden Hinde is ridiculous. It is practically a Legion Commander Aghs duel. Virtually every time only one of the two ships survive because it lasts almost 10 seconds at max rank. You can't even stun or silence the Golden Hinde. Not to mention other ships with similarly frustrating abilities such as the Quedagh Merchant. 5 seconds of full invulnerability and magic immunity is not fun to deal with.

Thirdly, the mid-late weapons are too expensive compared to the ships. I am pretty sure this is a balance issue but from my experience, any player who rushes a lategame ship instantly has an extremely huge advantage that helps them win teamfights with ease. This is often due to the fact that buying new weapons don't give you enough damage to actually fight the bigger ships because the dps to health ratio difference is too large, even though the bigger ships costs just as much as a late game weapon.

Next up would be a complaint on vision. Players have literally no tools to work with when it comes to vision. We cannot see anything beyond the lanes and have no way of doing so unless we, as the League players like to call it, "facecheck" it. Paired with really punishing crowd control it leads to everyone playing like cowards or die instantly just because the other guy was waiting behind that rock for his compass to come off cooldown so that he can blink in and kill you.

On the other hand, why does killing the enemy barracks cripple your own income? This is mind boggling because a team should be rewarded for killing an objective on the enemy team but what they get is actually a punishment because they are then unable farm that lane anymore and it also leads to the enemy team getting free farm unless they continuously pressure or instantly end the game.

Last but not least, I think the map lacks actual places for players to go to in terms of objectives. Even Battleship Legendaries, the most common battleship map to be played has this issue where the only reason you went outside of the lanes was because you are playing a trader, or you are trying to kill a trader. This effectively makes everything outside of the lanes except for the secret shops useless in terms of gameplay. There is no reason why anyone would leave the lanes, except for trading, which havent been implemented yet. I actually took a good look at the map and the trading spots are actually very beautifully made but you probably want to give players reasons to leave the lanes besides trading or hunting traders.

All in all, I think all of the above issues can be fixed in time, because dota 2 and even League of Legends are good examples when it comes these mechanics or balance issues.

tl;dr: Compass is op. Abilities are really unbalanced and frustrating to play against. Lategame weps too expensive/weak compared to ships. No tools to provide map vision. Killing enemy barracks means ♥♥♥♥ing your own team. No reasons to leave lane, lack of objectives.