HMS H4

	HMS H4 at Brindisi, August 1916
History
United Kingdom
Name	H4
Builder	Canadian Vickers, Montreal
Laid down	11 January 1915
Launched	1 April 1915
Commissioned	5 June 1915
Fate	Sold, 30 November 1921
General characteristics
Class and type	H-class submarine
Displacement	364 long tons (370 t) surfaced; 434 long tons (441 t) submerged;
Length	150 ft 3 in (45.80 m)
Beam	15 ft 4 in (4.67 m)
Propulsion	1 × 480 hp (358 kW) diesel engine; 2 × 620 hp (462 kW) electric motors;
Speed	13 knots (24 km/h; 15 mph) surfaced; 10 knots (19 km/h; 12 mph) submerged;
Range	1,600 nmi (3,000 km) at 10 kn (19 km/h; 12 mph) surfaced; 130 nmi (240 km) at 2 kn (3.7 km/h; 2.3 mph) submerged;
Complement	22
Armament	4 × 18 in (457 mm) bow torpedo tubes; 8 × 18 inch torpedoes; 1 × QF 6 pounder gun;

HMS H4 was a

Adriatic on 23 May 1918. She was sold on 30 November 1921 in Malta

.

Design

Like all pre-H11 British H-class submarines, H4 had a displacement of 364 long tons (370 t) at the surface and 434 long tons (441 t) while submerged.^[2] It had a total length of 150 feet 3 inches (45.8 m), a beam of 15 feet 4 inches (4.67 m), and a draught of 12 feet (3.7 m).^[3] It contained a diesel engines providing a total power of 480 horsepower (360 kW) and two electric motors each providing 320 horsepower (240 kW) power.^[3] The use of its electric motors made the submarine travel at 11 knots (20 km/h; 13 mph). It would normally carry 16.4 long tons (16.7 t) of fuel and had a maximum capacity of 18 long tons (18 t).^[4]

The submarine had a maximum surface speed of 13 knots (24 km/h; 15 mph) and a submerged speed of 11 knots (20 km/h; 13 mph). British H-class submarines had ranges of 1,600 nautical miles (3,000 km; 1,800 mi).

bows and the submarine was loaded with eight 18 inches (460 mm) torpedoes.^[2] It is a Holland 602 type submarine but was designed to meet Royal Navy specifications. Its complement was twenty-two crew members.^[2]

Citations

^ Britain 6-pdr / 8cwt [2.244"/40 (57 mm)] QF Marks I and II
^ ^a ^b ^c ^d "H-class". Battleships-Cruisers, Cranston Fine Arts. Retrieved 20 August 2015.
^
ISBN 978-1-86176-281-8. Retrieved from Naval-History
on 20 August 2015.

^ J. D. Perkins (1999). "Building History and Technical Details for Canadian CC-Boats and the Original H-CLASS". Electric Boat Company Holland Patent Submarines. Retrieved 20 August 2015.

References

Hutchinson, Robert (2001). Jane's submarines : war beneath the waves from 1776 to the present day. London: HarperCollins.
ISBN 9780007105588
.

[1] Britain 6-pdr / 8cwt [2.244"/40 (57 mm)] QF Marks I and II

[batcru-2] "H-class". Battleships-Cruisers, Cranston Fine Arts. Retrieved 20 August 2015.

[Colledge-3] 
ISBN 978-1-86176-281-8. Retrieved from Naval-History
on 20 August 2015.

[4] J. D. Perkins (1999). "Building History and Technical Details for Canadian CC-Boats and the Original H-CLASS". Electric Boat Company Holland Patent Submarines. Retrieved 20 August 2015.

[1]

[2]

[3]

[4]

v t e Holland 602 type submarines
Royal Canadian Navy CH class	CH-14 CH-15
Chilean H class	H1 ⁄ Guacolda H2 ⁄ Tegualda H3 ⁄ Rucumilla H4 ⁄ Guale H5 ⁄ Quidora H6 ⁄ Fresia
Italian H class	H1 H2 H3 H4 H5 H6 H7 H8
Imperial Russian and Soviet Navies American Holland class	AG-11 AG-12 AG-13 / AG-16 AG-14 AG-15 AG-21 AG-22 AG-23 AG-24 A-3 (AG-25) AG-26
Royal Navy British H class	H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H27 H28 H29 H30 H31 H32 H33 H34 H41 H42 H43 H44 H47 H48 H49 H50 H51 H52
United States Navy United States H class	H-1 H-2 H-3 H-4 H-5 H-6 H-7 H-8 H-9
Preceded by: G class Followed by: K class
List of submarines of the United States Navy List of submarine classes of the United States Navy