Bireme — Wiki · Kings By Dawn

Role and stats #

Anti-light escort: ×1.5 damage against Light Galleys. These are base stats before researched bonuses.

Role: Anti-light escort: ×1.5 damage against Light Galleys.
Branch: Navy
Recruit at: Navy level 7
Cost per unit: 5,806 Wood, 1,210 Metal, 484 Food
Base training: 17m 30s
Health / Armor / Damage: 1,000 / 30 / 80
Counters: ×1.5 versus Light Galley
Armor ignored: 0%
PvP cargo capacity: 500

Recruitment unlock: Bireme Shipwrights: University level 7, 4,900 Crystals, 8h 10m. Navy details.

Training at each facility level #

One batch is active per facility; additional batches wait in order. Times below are per unit, before active VIP; lower facility levels cannot recruit this unit.

Bireme training times, before VIP
Facility level	Time per unit	Change from base
7	15m 24s	−12%
8	15m 3s	−14%
9	14m 42s	−16%
10	14m 21s	−18%
11	14m	−20%
12	13m 39s	−22%
13	13m 18s	−24%
14	12m 57s	−26%
15	12m 36s	−28%
16	12m 15s	−30%
17	11m 54s	−32%
18	11m 33s	−34%
19	11m 12s	−36%
20	10m 51s	−38%
21	10m 30s	−40%
22	10m 9s	−42%
23	9m 48s	−44%
24	9m 27s	−46%
25	9m 6s	−48%

Every research upgrade #

Each rank gives another 5% to its own stat; ranks I–V total +25% per stat. Research is account-wide, permanent, and completes offline.

Bireme individual research projects
Upgrade	Stat	Rank bonus	Resulting Regular stat	University	Extra facility gate	Crystal cost	Time	Prerequisite
Hull Reinforcement I	Health	+5% total	1,050	7	Navy lv 1	100	30m	Bireme Shipwrights
Hull Reinforcement II	Health	+10% total	1,100	7	Navy lv 1	200	2h	Bireme Shipwrights, Hull Reinforcement I
Hull Reinforcement III	Health	+15% total	1,150	12	Navy lv 1	1,200	4h 30m	Bireme Shipwrights, Hull Reinforcement II, Veteran
Hull Reinforcement IV	Health	+20% total	1,200	18	Navy lv 1	4,550	8h	Bireme Shipwrights, Hull Reinforcement III
Hull Reinforcement V	Health	+25% total	1,250	25	Navy lv 1	13,600	12h 30m	Bireme Shipwrights, Hull Reinforcement IV, Elite
Bronze Plating I	Armor	+5% total	31.5	7	Navy lv 1	100	30m	Bireme Shipwrights
Bronze Plating II	Armor	+10% total	33	7	Navy lv 1	200	2h	Bireme Shipwrights, Bronze Plating I
Bronze Plating III	Armor	+15% total	34.5	12	Navy lv 1	1,200	4h 30m	Bireme Shipwrights, Bronze Plating II, Veteran
Bronze Plating IV	Armor	+20% total	36	18	Navy lv 1	4,550	8h	Bireme Shipwrights, Bronze Plating III
Bronze Plating V	Armor	+25% total	37.5	25	Navy lv 1	13,650	12h 30m	Bireme Shipwrights, Bronze Plating IV, Elite
Naval Armaments I	Damage	+5% total	84	7	Navy lv 1	100	30m	Bireme Shipwrights
Naval Armaments II	Damage	+10% total	88	7	Navy lv 1	200	2h	Bireme Shipwrights, Naval Armaments I
Naval Armaments III	Damage	+15% total	92	12	Navy lv 1	1,200	4h 30m	Bireme Shipwrights, Naval Armaments II, Veteran
Naval Armaments IV	Damage	+20% total	96	18	Navy lv 1	4,550	8h	Bireme Shipwrights, Naval Armaments III
Naval Armaments V	Damage	+25% total	100	25	Navy lv 1	13,650	12h 30m	Bireme Shipwrights, Naval Armaments IV, Elite

Veteran and Elite improvements #

Research the rank, then convert existing stationed units in their recruiting building. Conversion costs below are per unit, in addition to the one-time Crystal research cost. Veteran adds +20% base Armor and Damage; Elite adds +40%. Health is unaffected by equipment.

Bireme equipment unlocks and conversion costs
Conversion	Facility level	Rank research	University	Research Crystals	Research time	Research prerequisites	Conversion cost / unit
Regular → Veteran	10	Veteran	7	200	2h	Hull Reinforcement II, Bronze Plating II, Naval Armaments II	7,500 Metal, 242 Food
Veteran → Elite	18	Elite	18	4,550	8h	Hull Reinforcement IV, Bronze Plating IV, Naval Armaments IV, Veteran	11,250 Metal, 363 Food

Bireme Regular, Veteran, and Elite stats
Equipment	Stat research	Health	Armor	Damage
Regular	No stat research	1,000	30	80
Regular	All three stat tracks rank V	1,250	37.5	100
Veteran	No stat research	1,000	36	96
Veteran	All three stat tracks rank V	1,250	43.5	116
Elite	No stat research	1,000	42	112
Elite	All three stat tracks rank V	1,250	49.5	132

Bireme improvement times before active VIP
Facility level	Regular → Veteran / unit	Veteran → Elite / unit
10	7m 10.5s	Requires level 18
11	7m	Requires level 18
12	6m 49.5s	Requires level 18
13	6m 39s	Requires level 18
14	6m 28.5s	Requires level 18
15	6m 18s	Requires level 18
16	6m 7.5s	Requires level 18
17	5m 57s	Requires level 18
18	5m 46.5s	8m 39.75s
19	5m 36s	8m 24s
20	5m 25.5s	8m 8.25s
21	5m 15s	7m 52.5s
22	5m 4.5s	7m 36.75s
23	4m 54s	7m 21s
24	4m 43.5s	7m 5.25s
25	4m 33s	6m 49.5s

Learn the system #

Planning an army? Add Bireme to the Army Planner to total costs, training time and cargo for a whole force.

Rules reference. Values come from the game rules at revision 999310651f (snapshot e5f090b681, checked 5 October 2026). Base values exclude conditional bonuses such as VIP and active monuments. Numbers can change between playtest updates.