Weight Grouping
Individual construction groups have an identification letter used initially for calculation purposes in the design stages but ultimately retained throughout the period of the ship's useful life.

S = Weight of compartmented hull, comprising SI (building materials, e.g. steel ST 45 and ST 52, excluding waterline armour), S II (metalworkers), S III (carpenters), S IV (painters).

MI = Main machinery and connections, condensers, gears, couplings, shaft connections, propellers, auxiliary machinery, conduits and piping used in connection with the operation of the main machinery, exhaust/funnel cap, equipment etc., boilers with armatures, oil and water in the main engine plant.

MII = Auxiliary boiler plant, ship's heating system, washing and drinking water desalination plant, laundry, ablutions, kitchen gear etc., ship's pumps, primary electrical plant, lighting, cables, stering assembly, capstans, boats' windlasses, room fans, weapon systems, refrigerating plant, searchlights, signal lamps, command elements, gyro compass, mileage logs, sirens and workshops.

The remaining groups are indicated by the appropriate identification letter below.

All weights are expressed hereunder in metric tonnes.
Name of the ship Bismarck Tirpitz
Ship (SI-SIV), including armour and ship's gear, consumables, crew, effects, provisions and fresh water 11,691 tonnes 11,691 tonnes
Armour less turrets 17,450 tonnes 17,450 tonnes
Main machinery plant with equipment (MI) 2,800 tonnes 2,800 tonnes
Fuel, lubricating oil, boiler feedwater 7,216 tonnes  
Auxiliary machinery with equipment (MII) 1,428 tonnes 1,428 tonnes
(A) Armament and equipment (plus ammunition) (Plus artillery armour) 5,973 tonnes
(7,577 tonnes)
(T) Torpedo system 0 0
(F) Aircraft installation 83 tonnes 80 tonnes
(Spr) Defensive weapons 8 tonnes 8 tonnes
(I) General equipment 369,4 tonnes 361 tonnes
(N) Nautical equipment 8,6 tonnes 9 tonnes
(T) Masts and rigging 30 tonnes 30 tonnes
 
Empty ship with equipment 39,931.2 tonnes 39,931 tonnes
  Ammunition 1,510.4 tonnes 1,510 tonnes
  Torpedoes 0 0
  Defensive equipment 2,5 tonnes 3 tonnes
  Aircraft ammunition 0 0
  Consumables 155.4 tonnes 156 tonnes
  Crew and effects 243.6 tonnes 247 tonnes
  Provisions 194.2 tonnes 194 tonnes
 
Type displacement (without drinking and washing water) 42,343.5 tonnes 42,077 tonnes
  Drinking water 139.2 tonnes 139 tonnes
  Washing water 167 tonnes 167 tonnes
  Boiler feedwater 187.5 tonnes
(battle cells)
188 tonnes
  Fuel oil 3,226 tonnes 3,226 tonnes
  Diesel fuel oil 96.5 tonnes 94 tonnes
  Lubricating oil 80 tonnes 80 tonnes
  Aviation spirit and coolant 17 tonnes
(one filling)
17 tonnes
 
Construction displacement 45,950.5 tonnes 45,951 tonnes
Supplementaries:
  Boiler feedwater 187.5 tonnes 188 tonnes
  Fuel oil 3,226 tonnes 3,226 tonnes
  Diesel fuel oil 96.5 tonnes 97 tonnes
  Lubricating oil 80 tonnes 80 tonnes
  Aviation spirit and coolant 17 tonnes 17 tonnes
  Reserve fresh water 389.2 tonnes 389 tonnes
 
Full displacement 49,946.7 tonnes 49,948 tonnes
(Bismarck special supplement fuel 1,009 tonnes; actual full displacement 50,955.7 tonnes)