Caliber,

 mm

Type

Year

Ships used on

Full

mass, kg

Length, kg

Explosive

charge

Explosive

mass, kg

Fire

range, km

Speed,

 kts

Heading

 system

450

18`` Mk IV

1895

surface ships

383

3.56

wet powder

53.5

0.7

26.5

---

450

18`` Mk VII

1910

surface ships

TNT

145

4.6

6.4

35

29

---

450

18`` Mk VIII

1914

SS

1736

TNT

145

2.3

3.7

35

29

---

533

21`` Mk II

1914

all

TNT

early - 181

later - 234

surface ships - 7.3

SS- 4.6

29

35

---

533

21`` Mk II***

1915

capital ships

TNT

234

4.1

9.8

45

31

---

533

21`` Mk IV, IV*

1916

DD, WWII MTB and SS

1454

6.90

TNT

234

surface ships - 7.3

9.1

12.3

SS - 5.5

8.7

35

29

25

40

35

---

533

21`` Mk V

1918

DD "A" and "B", Kent-class

1736

7.09

TNT

234

4.6

12.3

40

25

---

622

24.5`` Mk I

1927

Nelson

2585

8.10

TNT

337

13.7

18.3

35

30

---

533

21`` Mk VII

1927

CA

1862

7.77

TNT

337

5.2

35

---

533

21`` Mk VIII

1927

SS, PT

1566

6.58

TNT

340

4.6

40

---

533

21`` Mk VIII**

1930s

SS, PT

1566

6.58

early - TNT

later - torpex

327

340

4.6

6.4

45.5

41

---

533

21`` Mk IX

1930

DD

1693

7.28

TNT

340

9.6

12.3

36

30

---

533

21`` Mk IX*

1930s

DD

1693

7.28

TNT

340

10.0

12.8

36

30

---

533

21`` Mk IX**

1940s

DD

1693

7.28

early - TNT

later - torpex

327

365

10.0

13.7

41

35

---

533

21`` Mk X

1940

Havant-class

1620

7.20

TNT

300

3.0

5.0

8.0

12.0

47

43

36

29

---

533

21`` Mk X**

1940

PT

1620

7.20

TNT

300

3.0

5.0

8.0

12.0

47

43

36

29

---

450

18`` Mk XV

1943

PT

817

5.25

torpex

247

2.3

3.2

40

33

---

533

21`` Mk 20E Bidder

1955

all

821

6.46

89

11.0

20

passive sonar

533

21`` Mk 23 Grog

1970

SS

907

6.46

89

8.0

28

by wires