Flag sizes

Imperial German Navy War Flag Sizes (1903–1918)

Size (cm) Ratio English Designation German Designation Usage / Ship Type Example Status / Marking
050 × 0501.00:1JackGöschBow flag in portDepot – Gösch / bow flag
060 × 1001.67:1Small boat / U-boatU-BootsflaggeU-boats, small craftSM U-9Depot – 1 × 6
095 × 1571.65:1Boat War FlagBootsflaggeTorpedo boatsS90-classDepot – 1.5 × 0.95
125 × 2001.60:1War FlagGaffelflaggeAuxiliary shipsDepot shipOfficial – Size 5
150 × 2501.67:1War Flag (Size 4)GaffelflaggeSmall cruisersSMS G38Official – Size 4
180 × 3001.67:1War Flag (Size 3)GaffelflaggeLight cruisersSMS DresdenOfficial – Size 3
190 × 3151.66:1Topmast FlagToppflaggeMasthead / commandSMS DerfflingerField use
225 × 3751.67:1War Flag (Unofficial)GaffelflaggeCommand shipsSMS ScharnhorstOfficial – Size 2
240 × 4001.67:1War Flag (Size 2)GaffelflaggeArmored cruisersSMS BlücherOfficial – Size 2
270 × 4501.67:1War Flag (Size 1)GaffelflaggeBattleshipsSMS KönigOfficial – Size 1

Color Codes:
[Green] Official – listed in regulations
[Yellow] Depot use – documented but unofficial
[Grey] Field use – not standardized

Notes:
• Some depot sizes deviate from standard 5:3 ratio.
• Depot sizes like 60×100 and 95×157 were authentic but not listed in formal naval regulations.

Sources:
Marine-Verordnungsblatt (1903–1913), Dienstvorschriften, archival depot flags, shipyard records, and museum publications.

Standard Flag Sizes – Nazi Germany (1933–1945)

Kriegsmarine / Gösch / Reichsdienstflagge / Naval Ensign Sizes

Size Dimensions (cm) Ratio Ratio Note In FlagGeek Collection Flag Type in Collection
118 × 30≈ 3:5approx. 3:5Wassersportflagge
240 × 65≈ 8:13not 3:5
350 × 85≈ 10:17approx. 3:5Kriegsflagge / Gösch
4Not known
580 × 135≈ 3:5approx. 3:5Kriegsflagge / Gösch
6100 × 170≈ 3:5approx. 3:5Kriegsflagge
7150 × 2503:5exact 3:5Kriegsflagge
8200 × 335≈ 3:5approx. 3:5Kriegsflagge
9250 × 4005:8not 3:5Reichsdienstflagge
10300 × 5003:5exact 3:5Gösch
11400 × 670≈ 3:5approx. 3:5
12450 × 7503:5exact 3:5

Standard Flag Sizes – United States

U.S. Ensign Sizes (G-Spec / MIL-F-2692)

Size Feet Inches Centimeters Ratio In FlagGeek Collection Flag Type in Collection
120.00 × 38.00240 × 456609.6 × 1158.210:19
219.00 × 36.10228 × 433.2579.1 × 1099.410:19
314.35 × 27.27172.2 × 327.2437.4 × 830.510:19
412.19 × 23.16146.3 × 277.9371.5 × 705.010:19
510.00 × 19.00120 × 228304.8 × 579.110:19
68.94 × 16.99107.3 × 203.9272.5 × 517.910:19
75.14 × 9.7761.7 × 117.2156.7 × 297.810:19
85.00 × 9.5060 × 114152.4 × 289.610:19
93.52 × 6.6942.2 × 80.3107.3 × 203.910:19
102.90 × 5.5134.8 × 66.188.4 × 167.910:19
112.37 × 4.5028.4 × 54.072.2 × 137.210:19
121.31 × 2.4915.7 × 29.939.9 × 75.910:19U.S. Ensign “No. 12 MI 1941”

Note: All U.S. military and government flags use a fixed 10:19 ratio under official standards (e.g., MIL-F-2692, G-Spec).
These sizes were used across ships, bases, vehicles, and ceremonial displays.

Standard Flag Sizes – United Kingdom

Union Jack / Red, White & Blue Ensigns

Size Feet Inches Centimeters Ratio In FlagGeek Collection Flag Type in Collection
118.00 × 36.00216 × 432548.6 × 1097.31:2
212.00 × 24.00144 × 288365.8 × 731.51:2
38.00 × 16.0096 × 192243.8 × 487.71:2
46.00 × 12.0072 × 144182.9 × 365.81:2
55.00 × 10.0060 × 120152.4 × 304.81:2
64.00 × 8.0048 × 96121.9 × 243.81:2
73.00 × 6.0036 × 7291.4 × 182.91:2
82.50 × 5.0030 × 6076.2 × 152.41:2
92.00 × 4.0024 × 4861.0 × 121.91:2
101.50 × 3.0018 × 3645.7 × 91.41:2
111.25 × 2.5015 × 3038.1 × 76.21:2
121.00 × 2.0012 × 2430.5 × 61.01:2
100 × 2001:2White Ensign

Note: All Union Jacks and British ensigns (Red, White, Blue) follow a fixed 1:2 ratio and share the same standard size system.
This table applies to:
🇬🇧 Union Jack (as naval jack) · 🟥 Red Ensign (civil use) · 🟦 Blue Ensign (state/public) · ⚪ White Ensign (Royal Navy)

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