Data Quality87%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the cruisers category.
01 / Overview
Diadem-class protected cruiser
Category
Country
Prime contractor
Production
1898–1903
Quantity
8
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
CRUISERS · PRE-WWI / INDUSTRIAL AGE
89
PERFORMANCE/PRICE
76
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the cruisers category, regardless of era.
02 / Specs & Design
◎Identification5MOD.5
- Hull Classificationfirst class protected cruiser
- Ship TypeProtected cruiser
- Commissioned1898
- Ships in Class8
- In ServiceNo
◈Displacement1MOD.1
- Full Load Displacement11,000 t
▣Dimensions4MOD.4
- Length (overall)141 m
- Length (waterline)133 m
- Beam21 m
- Draft8 m
◇Complement1MOD.1
- Total Complement677
◆Propulsion7MOD.7
- Arrangement (CODAG/COGAG…)2 shaft triple expansion engines
- Number of Engines2
- Shaft Power12,304 kW
- Shafts / Screws2
- Top Speed20.25 kn
- Range2,000
- Nuclear-PoweredNo
▤Gun Armament4MOD.4
- Main GunQF 6 inch naval guns
- Main Gun Calibre152 mm
- Main Gun Count16
- Secondary Guns12-pounder (76 mm) QF guns, QF 3-pounder (47 mm) guns
⬢Missile Armament3MOD.3
▲Underwater Warfare4MOD.4
- Torpedo Tubes2
- ASW CapabilityNo
- Hull-Mounted SonarNo
- Towed Array SonarNo
◎Aviation3MOD.3
◈Sensors & Combat Systems3MOD.3
▣Survivability4MOD.4
- CBRN CitadelNo
- DegaussingNo
- Hull Materialwood sheathed and coppered
- Stealth ShapingNo
◇Fleet Status3MOD.3
- Completed8
- Lost1
- Retired8
◆Armour2MOD.2
- ArmourHarvey Nickel steel
- Deck Armour102 mm
03 / History
SERVICE LIFESPANRetired
- 1898Production started
- 1899Entered service
- 1903Production ended
- 1910Sale: Canada (1 units)
- 1914First deployment: World War I
128
years in service
5
years in production
8
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 3 countries retired it.
04 / Operators
Operator Countries3country
Diadem-class protected cruiserSALES1records
| Year | Buyer | Quantity | Amount | Present Value (2025) |
|---|---|---|---|---|
| 1910 |  Canada | 1 | — | — |
ⓘ "Present Value" is an estimated amount adjusted for inflation.
05 / MASS Score
CRUISERS RANKING Cruisers · Pre-WWI / Industrial Age
MASS RANKINGSMASS ↗
227CRUISERS89PRE-WWI / INDUSTRIAL AGE · CRUISERS988UNITED KINGDOM · ALL WEAPONS143PERFORMANCE/PRICE · CRUISERS
ⓘ Rankings are within theCruiserscategory.
📚 Sources