Sea of Conquest Flagship Formation Guide: Best Ship Builds and Fleet Setup

For Sea of Conquest Gang leaders who want the best Flagship build, the right ship builds for each damage type, and a fleet that wins Showdown brackets instead of just showing big Power.

The number on your fleet's Power screen does not win Showdown o' Gangs. Formation does.

Two accounts with the same budget and the same heroes get very different results depending on whether they matched heroes to the right ships, built the right parts on each ship, and let the Flagship do its real job: absorb fire while the damage ships work. The accounts that lead their servers almost always planned the full fleet before they spent, not after.

This guide covers the Flagship build that defines the current meta, the ship builds for each damage type, where blueprint ships like the Warhammer fit, and how to set up a fleet where every piece adds up.

How flagship formation works

Every competitive Sea of Conquest fleet follows the same plan: a tough Flagship that soaks up every shot, and specialized side ships that deal damage without taking any. The Flagship's job is not to hurt the enemy. Its job is to be so durable that the enemy wastes shot after shot on it while your Artillery, Cutthroat, Blaze, Drowning or Strategic ships work freely. Get that right and the whole formation scales. Get it wrong and you have a Flagship with weak damage and side ships that die before they matter.

The Flagship is also the backbone of your progress. Its level sets the maximum level for every side ship, so every Flagship upgrade raises the ceiling of the whole fleet. Flagship first is the rule for progress, not just for combat. More side ship slots also open as the Flagship levels up, and until you have them, your damage is limited however well your heroes and parts are set up.

The best flagship build right now

HP and Armor come before everything else. Every part on the Flagship should have HP as the main stat. The Flagship takes all incoming fire, so its durability decides how long your side ships get to deal damage. An attack-stat Flagship that dies fast and hits for little is one of the most expensive formation mistakes we see.

On heroes, the current core is Chien for damage mitigation, Callahan Durrach for shields on top, and an aggro-pulling Captain who pulls enemy targeting onto the Flagship and away from your damage ships. Kenshiro, from the collab window, is the top pick for Captain. Toothsome Tom is the strongest standard-pool Captain and the right choice if you are not chasing the collab track. Together these three make a Flagship that takes sustained fire while your side ships work at full output.

The Flagship now takes up to five heroes. The fourth slot, the Master-at-Arms, only takes defense heroes. The fifth slot, the Surgeon, only takes support heroes. Accounts with deep defensive rosters can put strong defense heroes and a healing or mitigation support there without giving up the core three. If you are still building the core three, fill these slots with the best defense and support heroes you have instead of leaving them empty. Heroes in their preferred slot also get an extra stat bonus (about 20%, check the hero screen), so correct placement matters at every stage.

For ship tech, community guides like AllClash keep the same order: Hull upgrades (HP and Armor) first, then Weapons, then Engine and Crew. That matches the stat logic, because the Flagship's job is durability. Parts follow the same rule: HP and Armor on Flagship parts, attack on side ship parts. Four-piece set bonuses from matching part sets add more once you have the pieces.

Blueprint ships: Warhammer and the season hulls

Your Flagship is a fixed ship you upgrade, not something you build from a blueprint. Blueprint ships are side ships, and each season has its own: Warhammer in Season 1, Stormbringer in Season 2, Goddess Satjit in Season 3, Orochi in Season 4, Sceptre in Season 5 and Boreas in X1. Each build needs the blueprint plus 20 Shipwright's Hammers, and the quality you get on each build is random.

Blueprints come from the Cartographer's Corner, season event reward chests or real-money packs. Treat a new season blueprint like an SP hero decision. When your Flagship core is already solid and you have the fleet slot for it, it is a good addition. When it shows up before your Flagship hero core is complete, it competes with Conches that would add more formation power. Check the event screen for how to get it in the current season.

The best ship builds for each damage type

One rule across all of them: side ships take attack stats, not HP. The Flagship handles durability. Side ships turn that cover into damage. Putting defense stats on a damage ship wastes what your Flagship is buying you.

Artillery ship

Artillery deals area damage across enemy formations, which makes it the best return for most Showdown o' Gangs fights, where you face enemy fleets rather than single sea monsters. Long John Silver is the standout, with Fortuna as the second anchor. Stat priority is raw attack. Artillery is weak against single targets and strong whenever the enemy fields several ships.

Cutthroat ship

Cutthroat is single-target burst, built to break heavily defended Flagships and for sea monster content where area damage is wasted. Mamiya, from the current collab window, sits at the top. Fifi and Euryale carry the standard pool. Cutthroat covers what Artillery cannot, which is why Gang leaders assign the two types to different members instead of letting everyone build the same one.

Blaze ship

Blaze deals damage over time that ignores part of the target's armor, so it works well against high-armor targets and enemies that soak up burst damage. Demona Rood is the standard-pool anchor. Mai Shiranui is the top limited pick for accounts that built her during her window. Blaze rewards longer fights.

Drowning ship

Drowning is another damage-over-time type that grows stronger in long fights and is good against high-armor targets. Mari Itxaso is the new season enabler who raises its ceiling. B Jenet and Verdania round out the top picks. Drowning has leaned heavily on limited heroes, so it is harder to build deep if you missed those windows.

Strategic ship

Strategic gives steady, balanced damage between Artillery's spread and Cutthroat's burst. Kalomira and Vantanos are the current anchors. It works in both formation fights and single-target content without being the best at either.

Support ship

From Season 3 on, the meta adds a dedicated support ship next to the Flagship and damage ships. It runs heroes who help the whole fleet instead of dealing damage. Cecilia Schafer, Laila and Linea are the top picks. Cordelia belongs here, not on the Flagship, because her healing grows with the damage her ship takes, so she heals far more on a ship under fire than on a Flagship built to take as little as possible.

The best fleet setup for big accounts

A fleet runs from three ships early on up to six: one Flagship plus five side ships. Side ship slots open as the Flagship levels, around Flagship level 22 and 31 for the third and fourth, with the fifth near the top of the Flagship level range. Check the shipyard screen for the exact levels on your account. For big accounts the full six-ship fleet is the target, because each extra damage ship adds a whole damage type the enemy has to deal with.

The order for filling slots follows the formation logic:

1. Flagship, always.
2. Artillery for most accounts, because of its Showdown o' Gangs value.
3. Cutthroat, to cover single-target content.
4. Support, from Season 3 on.
5. Blaze, Drowning and Strategic, in the order that matches your hero roster.

There is no single right answer for the third and fourth damage types, because it depends on which heroes you built and which event windows you hit. Flagship first and Artillery second is consistent enough to call a rule.

How Gang leaders should coordinate fleet variety

The most common and costly Gang mistake is every top account running the same damage type. If your top five accounts all built Artillery ships with the same heroes, the Gang goes into Showdown brackets with lots of Artillery and no Cutthroat, Blaze, Drowning or Strategic. A coordinated enemy exploits that, because they know exactly what your damage looks like. The fix costs nothing: map who builds which type, assign on purpose, and make sure your core accounts field at least three different damage types.

The same goes for season blueprint ships. When a new season blueprint shows up in event reward chests or packs, leaders who know which members have complete Flagship cores and spare Hammers can send those members to build it early. Members still building their core ships should skip it and keep their Hammers for builds already in use. One message in leadership chat at the start of the season gets this to the whole roster, so nobody has to work it out under event pressure.

Where Packsify fits

Packsify buys Sea of Conquest Gleamstones and the ship and hero packs you pick through the official Apple App Store or Google Play, usually with 10 to 30% more pack value for the same budget. If you have not used it before, start with the Sea of Conquest top up guide and how we keep accounts safe.