U-boat Archive - KTB Notes - Armament

Torpedo Firing Report form typical of those used in 1939-1942

Block No. . . . . . . . . . . Firing Report Page . . . . . .
. . . . . . . . . . . . . . . . . . . . for Surface Vessels and U-boats . . . . . . . . . . . . . . . . . . . . . . . . . .
(Shooting Vessel)		(Rank, Name and Official Position of the Shooter)
Date: . . . . . . . . . . . . Position: . . . . . . . . .. . Time of firing: . . . . . . . . . . . . .

Water depth: . . . . . . . . . . Weather: . . . . . . . . . . . Visibility: . . . . . . . . . . Wind: . . . . . . . . . . .

Sea State: . . . . . . . . . . . . . . . . Swell: . . . . . . . . . . . . . . . .

Target: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Name) (Size) (Length) (Draft)

State of loading and cargo: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Success: . . . . Hits . . . . Misses . . . . Failures . . . . Attack shots . . . . Finishing shots (on stopped target)

Line No.	Single shot, Multiple shot- or Fan shot		1	2	3	4
1	Interval in seconds and spread angle in degrees
2		Torpedo model, Serial number
3		Set velocity set and running distance
4		Set depth
5		Pistol number, Type of adaptation
6		Firing setting (AZ or MZ with sensitivity setting (0-16 / 0-64)
7		Unknown (possibly minimum arming distance)
8		Designation
9		Ejection method
10		Own speed
11		Own course
12		Relative bearing to the target
13		Firing angle
14	Targeting, optics and computer
15	Aim point
16	Torpedo course
17	Set firing data: Enemy speed = . . . . . . Target angle γ = . . . . . . Leading angle β = . . . . . .
18	Depth at the shot (only for U-boats)
19	State of trim at the shot (by ship etc. heeling at the shot)
20	Estimated range at the shot and observed running time
21	Torpedo declination and run
22	Shot while turning or on steady course
23	Gyro angle in color and degrees (torpedo course right or left of the bow - relative)
24	G7e with range at firing more than 3000 m: a) the last charging before firing b) the last heating before firing

Approach sketch with firing diagram. How was firing data acquired? Special observations, Defence, Explanation for miss.

Effect on the target, Height and appearance of the explosive column, Time to completely sink, Perception in own boat.

Signature of the shooter - Signature of the Commander - certified to be correct

Commentary, analysis and decision.

(Signed - date)

Key and Notes

Line No.	German	English	Notes
1	Zeittakt in sec und Streuwinkel in Graden	Time interval in seconds and spread angle in degrees	For Fan Shots, the time interval in seconds between successive torpedo firings and the angle between the torpedoes fired.
2	Torpedo Art, Nummer	Torpedo Type/designation, Serial Number	Throughout the war there were two basic types of torpedoes (G7a and G7e). Torpedoes were further described by designation (TI, TII, TIII, TIIIa, TI Fat I, TIII Fat II, TI Lut I, TIIIa Lut I, TIV, TV etc.
3	Torpedo Vt und eingestellte Laufstrecke	Torpedo Set velocity set and running distance	Speed settings in knots and resulting running distance (typically 30 knots/12000 m or 40 knots/7500 m for G7a and 30 knots/5000 m for G7e) (30 k = 15.43 m/s; 40 k = 20.58 m/s)
4	Torpedo Eingestellte Tiefe	Torpedo Set depth	Running depth setting in meters (0-12 and later 0-15 meters in one meter increments)
5	Pistol Pi Nummer, Art der Aptierung	Pistol Serial Number, Type of adaptation	Pistol (detonator) at the start of the war was the Pi I which contained both contact and magnetic elements. These were frequently identified as being set for contact detonation only (AZ) or magnetic detonation only (MZ) and lines 6 & 7 left unused. Due to problems with both the contact and magnetic elements a series of adaptations were introduced for example: A+B+N. The Pi G7H (Pi H) was a contact only version of the Pi I. The Pi 2 with both contact and magnetic elements was introduced in November 1942 for use on the G7e only and the Pi3/MZ 3 with both contact and magnetic elements was introduced in August 1943. The T IV employed the contact only Pi 4a and the T V employed the TZ 5 / Pi 4s/c combination (magnetic and contact).
6	Pistol Pi Z-Einstellring	Pistol Pistol "Z" Setting	Magnetic firing was selected "on" or "off" and magnetic sensitivity (zone 0 to 16 or 0 to 64) could be set
7	Pistol Pi S-Einstellring	Pistol Pistol "S" Setting	Unknown. Generally left blank but occasionally what appears to be a number of meters is specified (120-250 m). Perhaps only used for the early Pi I pistol.
8	Rohr Bezeichnung	Tube Designation	The tube from which the torpedo was launched (Roman numerals were used - I-IV forward and V and VI aft)
9	Rohr Ausstoßart	Tube Ejection method	Whether the torpedo was fired on the surface (über wasser) or submerged (ünter wasser) - On the surface the torpedo was usually fired (ohne Kolben (o.K.) - Without piston) by compressed air between the torpedo and the piston leaving the piston in place behind the torpedo; submerged the torpedo was usually fired (mit Kolben (m.K.) - With piston) by compressed air behind the piston forcing the piston and the torpedo down the tube. When the piston reached the end of the tube it stopped thus preventing the compressed air from escaping and leaving bubbles to mark the firing location - sometimes the pressure used to expel the torpedo was noted in kg/cm2
10	Beim Schuß Eigene Fahrt	At firing Own speed	U-boat speed in knots
11	Beim Schuß Eigener Kurs	At firing Own course	U-boat course in degrees
12	Beim Schuß Schiffspeilung	At firing Relative bearing to the target	Target bearing relative to the bow of the boat in degrees (0-359) (symbol = psi - φ)
13	Beim Schuß Schußwinkel	At firing Firing angle	Torpedo course relative to the boat's heading in degrees (0-359) (symbol = sigma - ς)
14	Zielstelle, Ziel- und Rechengerät	Targeting Device, Optics and Computer	What device was used to gather the targeting data and compute the firing solution. Options on the surface included: bridge/T.U.Z.A. (Torpedo-Uboot-zielapparat) later U.Z.O. (U-Boot-Ziel-Optik), the Peildiopter (telescope fitted over the gyro compass), or simply the netzsage (net cutter); submerged either the conning tower/attack periscope (Angriffssehrohr (ASR) or just Standsehrohr) or control room/search/sky observation periscope (Luftzielsehrohr (LZSR)). The torpedo data computer was known as the eVorhaltrechner (T.vh.Re or T.v.Re.)
15	Abkommpunkt	Aim point	The aim point on the target ship, for example: mitte = center, Brücke = bridge
16	Torpedokurs	Torpedo course	The course of the torpedo in degrees
17	Eingestellte Schußunterlagen Vg = γ = β =	Set firing data: Vg =, γ (gamma) =, β (beta) =	The data that was input into the torpedo data computer: Vg = target velocity in knots γ = gamma - target angle in degrees β = beta - leading angle in degrees
18	Tauchtiefe beim Schuß (nur bei U-Booten)	Depth at firing (only in U-boats)	U-Boat depth at firing measured at the keel in meters
19	Lastigkeit beim Schuß (bei Schiffen usw. Krängung beim Schuß)	Trim at firing (heeling angle)	Bow up (Vorlastigkeit) = + m, bow down = - m, an even keel (Nullastig)
20	Entfernung beim Schuß u. beob. Laufzeit	Estimated range at the shot and observed running time	Estimated range (Entfernung (E)) to the target in meters and actual running time of the torpedo (Laufzeit) – measured in minutes and / or seconds.
21	Torpedoniedergang und Lauf	Torpedo declination and run	Plus or minus angle in degrees the torpedo varied from the expected torpedo course and any malfunctions (failure to run, tube runner or circle runner)
22	Schuß im Abdrehen oder auf geraden Kurs	Fired on changing or steady course	The torpedo data computer accounted for the changing course of the boat during firing
23	Eingestellter Winkel nach Farbe u. Graden	Gyro angle in color and degrees	The angle in color and degrees the torpedo was set for (relative to the U-Boat), color refers to the international standard for navigation which is Red (rot) = Port (Left), and Green (grün) = Starboard (Right). Torpedoes could turn up to 90 degrees on leaving the tube.
24	Bei G7e und Schußweite über 3000m: a) letzte Nachladung vor dem Schuß: b) letzte Heizung vor dem Schuß:	For G7e at firing range over 3000 m: a) last charging before firing b) last heating before firing:	This only concerns the battery powered G7e torpedoes. These torpedoes had to be charged every few days preheated to +30 degrees C before firing if they were to achieve their maximum range of 5,000 meters (7,500 meters for the T IIIa) at 30 knots. Without preheating speed was reduced to 28 knots and range to 3300 meters (4,950 meters for the T IIIa).

Click the icon to view the associated records

Torpedo firing reports from U-47's 3rd war patrol

Torpedo firing reports from U-100's 5th war patrol

Torpedo firing reports from U-48's 9th war patrol

Torpedo Firing Report form typical of those used in 1943-1945

Block No. . . . . . . . . . . Page . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Shooting Vessel)			(Rank, Name and Official Position of the Shooter)
Date: . . . . . . . . . . . . Position: . . . . . . . . .. . Time: . . . . . . . . . . . . .

Water depth: . . . . . . . . . . Weather: . . . . . . . . . . . Visibility: . . . . . . . . . . Wind: . . . . . . . . . . .

Sea State: . . . . . . . . . . . . . . . . Swell: (Direction and height) . . . . . . . . . . . . . . . .

Target: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Name) (Size) (Length) (Draft)

State of loading and cargo: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . Hits	. . . . . . . . Misses	. . . . . . . . Failures	. . . . . . . . Attack shots	. . . . . . . . Finishing shots

Line No.

. . . . Single shot	. . . . Associated single shots
. . . . Multiple shots	. . . . Fan shot

Interval in seconds and spread angle in degrees

Torpedo model, Serial number, Type warhead

Set velocity set and running distance

Set depth

Set straight distance

a) right or left b) short or long

Pistol number, Type of adaptation

Setting of Magnetic firing switch (on or off)

Small test: When?

(met: +, did not meet: 0, not conducted: no)

Designation

Ejection method

Own speed

Own course

Relative bearing to the target

Firing angle

Targeting, optics and computer

Aim point

Torpedo course

Set firing data: Enemy speed = . . . . . . Target angle γ = . . . . . . Leading angle β = . . . . . .

Depth at the shot (only for U-boats)

State of trim at the shot (by ship etc. heeling at the shot)

Range: a) estimated, b) adjusted, c) Torp. running time

Torpedo declination and run

Shot while turning or on steady course

Gyro angle in color and degrees (torpedo course right or left of the bow - relative)

For G7e:

a) Last charging before firing

b) Acid temperature at firing per firing table

Approach sketch with firing diagram: 1.) How was firing data acquired? 2.) Special observations. 3.) Defence, 4.) Explanation for miss, 5.) Reason that "MZ-off" was used or that the "small test" was not performed before firing, 6.) Enemy's actions before firing (depth charges - aircraft bombs)

1.) Effect on the target, 2.) Height and appearance of the explosive column, 3.) Time to completely sink, 4.) Observations in own boat.

Signature of the shooter Signature of the Commander - certified to be correct

Analysis of the Torpedo Inspectorate

Key and Notes

Line No.	German	English	Notes
1	Zeittakt in sec und Streuwinkel in Graden	Time interval in seconds and spread angle in degrees	For Fan Shots, the time interval in seconds between successive torpedo firings and the angle between the torpedoes fired.
2	Torpedo Art, Nummer, Kopfart	Torpedo Type, Serial Number, Warhead type	Throughout the war there were two basic types of torpedoes (G7a and G7e). Torpedoes were further described by designation (TI, TII, TIII, TIIIa, TI Fat I, TIII Fat II, TI Lut I, TIIIa Lut I, TIV, TV etc.
3	Torpedo Vt und eingestellte Laufstrecke	Torpedo Set velocity set and running distance	Speed settings in knots and resulting running distance (typically 30 knots/12000 m or 40 knots/7500 m for G7a and 30 knots/5000 m for G7e) (30 k = 15.43 m/s; 40 k = 20.58 m/s)
4	Torpedo Eingestellte Tiefe	Torpedo Set depth	Running depth setting in meters (0-12 and later 0-15 meters in one meter increments)
5	Fat Eingestellte Geradeauslaufstrecke	Fat Set straight course distance	Distance that the Fat travelled on a straight course after making the initial turn on leaving the tube
6	Fat a) rechts od. links b) kurz od. lang	Fat a) right or left b) short or long	a) The direction of the second turn at the end of the straight run, b) the length of subsequent straight courses, could be set to short: 820 m, or long: 1500 m, resulting in a speed of advance of 5 or 7 knots.
7	Pistol Pi, Art, Nummer	Pistol Type, Serial number	Pistol (detonator) at the start of the war was the Pi I which contained both contact and magnetic elements. These were frequently identified as being set for contact detonation only (AZ) or magnetic detonation only (MZ) and lines 8 & 9 left unused. Due to problems with both the contact and magnetic elements a series of adaptations were introduced for example: A+B+N. The Pi G7H (Pi H) was a contact only version of the Pi I. The Pi 2 with both contact and magnetic elements was introduced in November 1942 for use on the G7e only and the Pi3/MZ 3 with both contact and magnetic elements was introduced in August 1943. The T IV employed the contact only Pi 4a and the T V employed the TZ 5 / Pi 4s/c combination (magnetic and contact).
8	Pistol Stellung des MZ-Schalters ("ein" od. "aus")	Pistol Setting of Magnetic firing switch (on or off)	Magnetic firing was selected "on" or "off" and magnetic sensitivity (zone 0 to 16 or 0 to 64) could be set
9	Pistol Kleine Prüfung: Wann? (erfüllt: + nicht erfüllt: 0, nicht ausgeführt: nein)	Pistol Small test: When? (met: +, did not meet: 0, not conducted: no)	The details of this test are currently unknown.
10	Rohr Bezeichnung	Tube Designation	The tube from which the torpedo was launched (Roman numerals were used - I-IV forward and V and VI aft)
11	Rohr Ausstoßart	Tube Ejection method	Whether the torpedo was fired on the surface (über wasser) or submerged (ünter wasser) - On the surface the torpedo was usually fired (ohne Kolben (o.K.) - Without piston) by compressed air between the torpedo and the piston leaving the piston in place behind the torpedo; submerged the torpedo was usually fired (mit Kolben (m.K.) - With piston) by compressed air behind the piston forcing the piston and the torpedo down the tube. When the piston reached the end of the tube it stopped thus preventing the compressed air from escaping and leaving bubbles to mark the firing location - sometimes the pressure used to expel the torpedo was noted in kg/cm2
12	Beim Schuß Eigene Fahrt	At firing Own speed	U-boat speed in knots
13	Beim Schuß Eigener Kurs	At firing Own course	U-boat course in degrees
14	Beim Schuß Schiffspeilung	At firing Relative bearing to the target	Target bearing relative to the bow of the boat in degrees (0-359) (symbol = psi - φ)
15	Beim Schuß Schußwinkel	At firing Firing angle	Torpedo course relative to the boat's heading in degrees (0-359) (symbol = sigma - ς)
16	Zielstelle, Ziel- und Rechengerät	Targeting Device, Optics and Computer	What device was used to gather the targeting data and compute the firing solution. Options on the surface included: bridge/T.U.Z.A. (Torpedounterwasser-zielapparat) later U.Z.O. (U-Boot-Ziel-Optik), the Peildiopter (telescope fitted over the gyro compass), or simply the netzsage (net cutter); submerged either the conning tower/attack periscope (Angriffssehrohr (ASR) or just Standsehrohr) or control room/search/sky observation periscope (Luftzielsehrohr (LZSR)). The torpedo data computer was known as the eVorhaltrechner (T.vh.Re or T.v.Re.)
17	Abkommpunkt	Aim point	The aim point on the target ship, for example: mitte = center, Brücke = bridge
18	Torpedokurs	Torpedo course	The course of the torpedo in degrees
19	Eingestellte Schußunterlagen Vg = γ = β =	Set firing data: Vg =, γ (gamma) =, β (beta) =	The data that was input into the torpedo data computer: Vg = target velocity in knots γ = gamma - target angle in degrees β = beta - leading angle in degrees
20	Tauchtiefe beim Schuß (nur bei U-Booten)	Depth at firing (only in U-boats)	U-Boat depth at firing measured at the keel in meters
21	Lastigkeit beim Schuß (bei Schiffen usw. Krängung beim Schuß)	Trim at firing (heeling angle)	Bow up (Vorlastigkeit) = + m, bow down = - m, an even keel (Nullastig)
22	Entfernung: a) geschätzt b) eingest. c) Laufzeit d. Torp.	Range: a) estimated b) adjusted c) running time of the torpedo	A. Estimated range (Entfernung (E)) to the target in meters. B. Adjusted range - the computed range based on the actual running time of the torpedo and the torpedo speed. C. Actual running time of the torpedo (Laufzeit) – measured in minutes and / or seconds.
23	Torpedoniedergang und Lauf	Torpedo declination and Run	Plus or minus angle in degrees the torpedo varied from the expected torpedo course and any malfunctions (failure to run, tube runner or circle runner)
24	Schuß im Abdrehen oder auf geraden Kurs	Fired on changing or steady course	The torpedo data computer accounted for the changing course of the boat during firing
25	Eingestellter Winkel nach Farbe u. Graden	Gyro angle in color and degrees color and degrees	The angle in color and degrees the torpedo was set for (relative to the U-Boat), color refers to the international standard for navigation which is Red (rot) = Port (Left), and Green (grün) = Starboard (Right). Torpedoes could turn up to 90 degrees on leaving the tube.
26	Bei G7e: a) letzte Nachladung vor dem Schuß: b) Säuretemperat beim Schuß gem. Schußtafel:	For G7e: a) last charging before firing b) Acid temperature at firing per firing table	This only concerns the battery powered G7e torpedoes. These torpedoes had to be charged every few days preheated to +30 degrees C before firing if they were to achieve their maximum range of 5,000 meters (7,500 meters for the T IIIa) at 30 knots. Without preheating speed was reduced to 28 knots and range to 3300 meters (4,950 meters for the T IIIa).

Torpedo firing reports from U-628's 3rd war patrol

Torpedo firing reports from U-435's 7th war patrol

Torpedo Firing Report form used for T V torpedoes from 1944 onwards

Schußmeldung für Wendeschießen = Firing report for reversal-shooting - The term Wendeschuß [reversal-shot] is used in firing reports and KTBs to refer to the firing of acoustic torpedoes. The term may have been derived from the idea that acoustic torpedoes were intended to counter escort vessels, turning the tactical situation in favor of the U-boat.

Block No. . . . . . . . . . .                              Page . . . . . .

. . . . . . . . . . . . . . . . . . . .     . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

     (Shooting Vessel)    (Rank, Name and Official Position of the Shooter)

Date: . . . . . . . . . . . .                   Position: . . . . . . . . .. .                         Time of firing : . . . . . . . . . . . . .

Water depth: . . . . . . . . . .      Weather: . . . . . . . . . . .        Visibility: . . . . . . . . . .       Wind: . . . . . . . . . . .

Sea State: . . . . . . . . . . . . . . . .                                     Swell: (Direction and height) . . . . . . . . . . . . . . . .

T a r g e t: (single or convoy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                                               (Name)                  (Size)                      (Length)               (Draft)

             In convoy: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                                                                 (Size of the visible gaps between vessels)

State of loading and cargo: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . Hits . . . . . . . . Misses . . . . . . . . Failures . . . . . . . . Attack shots . . . . . . . . Finishing shots

Line No.

1

2

3

4

1

Torpedo model, Serial number

2
Set guidance and running distance

3
Set depth

4
Serial number

5
Designation

6
Ejection method

7
Own speed

8
Own course

9
Relative bearing to the target

10
Firing angle

11
Targeting, optics and computer

12
Aim point

13
Torpedo course

14
Set firing data:    Enemy speed = . . . . . .        Target angle γ = . . . . . .        Leading angle β = . . . . . .

15
Depth and state of trim at firing

16
Range: a) estimated, b) adjusted, c) Torp. running time

17
Shot while turning or on steady course

18
Gyro angle in color and degrees (torpedo course right or left of the bow - relative)

19
Last charging before firing

20
Acid temperature at firing

21
Water temperature at firing

22
What were the conditions at the reversal-shooting?

23
Was strong sunlight present?

24
Aircraft bombs or depth charges before firing or during approach:

25
Behavior of the boat after firing

1. Tactical picture at the time of firing. 2. How was firing data acquired? 3. Special observations, defense. 4. Explanation for miss. 5. Did the opponent change course between shot and hit? 6. Was the target aimed at hit? 7. Was another target hit? How was it positioned in relation to the target aimed at? 8. Position of the hit (relative to the ship). 9. Effect on the target, explosive pillar, observations in own boat. 10. Aircraft bombs or depth charges before the shot or during the approach.

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Analysis of the Torpedo Inspectorate

Key and Notes

Line No.	German	English	Notes
1	Torpedo Art, Nummer	Torpedo Type, Serial Number	Presumably only used for T IV and T V
2	Torpedo Eingestellte Steuerung u. Laufstrecke	Torpedo Set guidance and running distance	The T V could be fired as a straight running torpedo or as an acoustic homing torpedo
3	Torpedo Eingestellte Tiefe	Torpedo Set depth	Running depth setting in meters (0-12 and later 0-15 meters in one meter increments)
4	Pistol Nummer	Pistol Serial number	The T IV employed the contact only Pi 4a and the T V employed the TZ 5 / Pi 4 combination (magnetic and contact).
5	Rohr Bezeichnung	Tube Designation	The tube from which the torpedo was launched (Roman numerals were used - I-IV forward and V and VI aft)
6	Rohr Ausstoßart	Tube Ejection method	Whether the torpedo was fired on the surface (über wasser) or submerged (ünter wasser) - On the surface the torpedo was usually fired (ohne Kolben (o.K.) - Without piston) by compressed air between the torpedo and the piston leaving the piston in place behind the torpedo; submerged the torpedo was usually fired (mit Kolben (m.K.) - With piston) by compressed air behind the piston forcing the piston and the torpedo down the tube. When the piston reached the end of the tube it stopped thus preventing the compressed air from escaping and leaving bubbles to mark the firing location - sometimes the pressure used to expel the torpedo was noted in kg/cm2
7	Beim Schuß Eigene Fahrt	At firing Own speed	U-boat speed in knots
8	Beim Schuß Eigener Kurs	At firing Own course	U-boat course in degrees
9	Beim Schuß Schiffspeilung	At firing Relative bearing to the target	Target bearing relative to the bow of the boat in degrees (0-359) (symbol = psi - φ)
10	Beim Schuß Schußwinkel	At firing Firing angle	Torpedo course relative to the boat's heading in degrees (0-359) (symbol = sigma - ς)
11	Zielstelle, Ziel- und Rechengerät	Targeting Device, Optics and Computer	What device was used to gather the targeting data and compute the firing solution. Options on the surface included: bridge/T.U.Z.A. (Torpedounterwasser-zielapparat) later U.Z.O. (U-Boot-Ziel-Optik), the Peildiopter (telescope fitted over the gyro compass), or simply the netzsage (net cutter); submerged either the conning tower/attack periscope (Angriffssehrohr (ASR) or just Standsehrohr) or control room/search/sky observation periscope (Luftzielsehrohr (LZSR)). The torpedo data computer was known as the eVorhaltrechner (T.vh.Re or T.v.Re.)
12	Abkommpunkt	Aim point	The aim point on the target ship, for example: mitte = center, Brücke = bridge
13	Torpedokurs	Torpedo course	The course of the torpedo in degrees
14	Eingestellte Schußunterlagen Vg = γ = β =	Set firing data: Vg =, γ (gamma) =, β (beta) =	The data that was input into the torpedo data computer: Vg = target velocity in knots γ = gamma - target angle in degrees β = beta - leading angle in degrees
15	Tauchtiefe beim Schuß	Depth at firing	U-Boat depth at firing measured at the keel in meters
16	Entfernung: a) geschätzt b) eingest. c) Laufzeit d. Torp.	Range: a) estimated b) adjusted c) running time of the torpedo	A. Estimated range (Entfernung (E)) to the target in meters. B. Adjusted range - the computed range based on the actual running time of the torpedo and the torpedo speed. C. Actual running time of the torpedo (Laufzeit) – measured in minutes and / or seconds.
17	Schuß im Abdrehen oder auf geraden Kurs	Fired on changing or steady course	The torpedo data computer accounted for the changing course of the boat during firing
18	Eingestellter Winkel nach Farbe u. Graden	Gyro angle in color and degrees color and degrees	The angle in color and degrees the torpedo was set for (relative to the U-Boat), color refers to the international standard for navigation which is Red (rot) = Port (Left), and Green (grün) = Starboard (Right). Torpedoes could turn up to 90 degrees on leaving the tube.
19	Letzte Nachladung vor dem Schuß	Latest charging before firing	These only concerns the battery powered G7e torpedoes. These torpedoes had to be charged every few days preheated to +30 degrees C before firing if they were to achieve their maximum range of 5,700 meters at 24 knots.
20	Säuretemperat beim Schuß	Temperature of acid before firing
21	Wassertemperatur beim Schuß	Water temperature at firing
22	Wie waren die Bedingungen für Wendeschießen?	What were the conditions at the reversal-shooting?	The tactical situation.
23	Lag starke Sonneneinstrahlung vor?	Was strong sunlight present?
24	Fliebo-oder Waboeinwirkung vor dem Schuß bzw. Anmarschweg:	Aircraft bombs or depth charges before firing or during the approach
25	Verhalten des Bootes nach dem Schuß	Behavior of the boat after firing	Typically the boat would go deep.

Torpedo firing reports from U-967's 3rd war patrol

Torpedo firing reports from U-952's 4th war patrol



	Approach sketch with firing diagram. How was firing data acquired? Special observations, Defence, Explanation for miss.











	Effect on the target, Height and appearance of the explosive column, Time to completely sink, Perception in own boat.











	Signature of the shooter - Signature of the Commander - certified to be correct


	Commentary, analysis and decision.







	(Signed - date)

	Click the icon to view the associated records
	Torpedo firing reports from U-47's 3rd war patrol
	Torpedo firing reports from U-100's 5th war patrol
	Torpedo firing reports from U-48's 9th war patrol



	Approach sketch with firing diagram: 1.) How was firing data acquired? 2.) Special observations. 3.) Defence, 4.) Explanation for miss, 5.) Reason that "MZ-off" was used or that the "small test" was not performed before firing, 6.) Enemy's actions before firing (depth charges - aircraft bombs)











	1.) Effect on the target, 2.) Height and appearance of the explosive column, 3.) Time to completely sink, 4.) Observations in own boat.











	Signature of the shooter Signature of the Commander - certified to be correct

	Analysis of the Torpedo Inspectorate

	Torpedo firing reports from U-628's 3rd war patrol
	Torpedo firing reports from U-435's 7th war patrol



	1. Tactical picture at the time of firing. 2. How was firing data acquired? 3. Special observations, defense. 4. Explanation for miss. 5. Did the opponent change course between shot and hit? 6. Was the target aimed at hit? 7. Was another target hit? How was it positioned in relation to the target aimed at? 8. Position of the hit (relative to the ship). 9. Effect on the target, explosive pillar, observations in own boat. 10. Aircraft bombs or depth charges before the shot or during the approach.
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	Analysis of the Torpedo Inspectorate

	Torpedo firing reports from U-967's 3rd war patrol
	Torpedo firing reports from U-952's 4th war patrol