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GUIDE

FFXIV Submarine Leveling Build Guide — Rank 1 to 145

Source and Thanks

This guide references data from the global server Submarine Builders Discord.

What is a Leveling Build?

Submarines gain experience through voyages and rank up over time. As their rank rises, they can equip better parts, so choosing a build that fits your game login cycle (48 hours / 36 hours / frequent check-ins) is the most efficient approach.
💡 A submarine is made up of 4 parts: Hull, Stern, Bow, and Bridge.

Part Abbreviation Guide

The builds below use these abbreviations.
S : Shark-class

U : Unkiu-class

W : Whale-class

C : Coelacanth-class

Y : Syldra-class

+ symbol : Modified part
Example) C+ U+ S+ S+ = Modified Coelacanth-class Hull + Modified Unkiu-class Stern + Modified Shark-class Bow + Modified Shark-class Bridge

48-Hour Build

This is the most comfortable build for most casual users. The submarine returns every 48 hours, so you can send it out again at the same time every other day.
RankBuild (Abbr.)Stats
1S S S S30/110/110/70/70
15S S U S40/90/120/75/65
25S S U W20/95/120/100/85
75+

36-Hour Build

This can level faster than the 48-hour build. The downside is that your login time keeps shifting (for example, 7 AM -> 7 PM -> 7 AM).
RankBuild (Abbr.)Stats
1S S S S30/110/110/70/70
15S S U S40/90/120/75/65
75+

Purpose-Based Farming Builds

When aiming for shipwreck-related drops, you will often look at the Deep-sea Site J, M, O, R, and Z sectors..
The listed times are only reference points. Actual profit depends heavily on how well you match the return timing. Even if a route is better on paper, a route around 24 hours can be more comfortable and stable if longer routes sit idle for several hours.
RangeRecommended RoutePart SetupOperation Note
From rank 77OJ / about 24 hoursModified Whale-class + Modified Shark-class + Modified Unkiu-class + Modified Coelacanth-class (WSUC++)A good starting point for shipwreck farming. It is easy to collect on a daily rhythm and has a low management burden.
From rank 101JORZ / about 36 hoursModified Shark-class + Modified Shark-class + Modified Unkiu-class + Coelacanth-class (S+S+U+C)A good efficiency route before max rank. Recommended if you can keep a 36-hour cycle.
From rank 128MOJ / about 24 hours 9 minutesModified Whale-class + Modified Shark-class + Modified Unkiu-class + Coelacanth-class (W+S+U+C)Expected profit is high, but the return time drifts a little each run. Short-term profit can fluctuate depending on voyage results.
Rank 145JORZ / about 31 hoursModified Whale-class + Modified Shark-class + Modified Unkiu-class + Modified Coelacanth-class (WSUC++)An efficient route after max rank in patch 7.5. Still, there is no need to force it if the return time does not fit your daily routine.