Akerman, P. (1989).
Encyclopaedia of British submarines 1901–1955.
 p.150.
Maritime Books.
ISBN 1-904381-05-7
"E Class".
Chatham Submarines.
Retrieved 20 August 2015.

Stern, pp.
29–30.

Stern, p. 30.

Stern, p. 38.

Submarines, War Beneath The Sea, From 1776 To The Present Day, by Robert Hutchinson.

The Royal Navy Submarine Service, A Centennial History, by Antony Preston.

Stern, Robert Cecil (2007).
The Hunter Hunted: Submarine Versus Submarine: Encounters from World War I to the Present.
Annapolis, Maryland: Naval Institute Press.
ISBN 1-59114-379-9.

The type of net in use had electric contact mines that were triggered from the shore.
See: Stern: p. 29.
Akerman, P. (1989). Encyclopaedia of British submarines 1901–1955.  p.150. Maritime Books. ISBN 1-904381-05-7
"E Class". Chatham Submarines. Retrieved 20 August 2015.
Stern, pp. 29–30.
Stern, p. 30.
Stern, p. 38.
Submarines, War Beneath The Sea, From 1776 To The Present Day, by Robert Hutchinson.
The Royal Navy Submarine Service, A Centennial History, by Antony Preston.
Stern, Robert Cecil (2007). The Hunter Hunted: Submarine Versus Submarine: Encounters from World War I to the Present. Annapolis, Maryland: Naval Institute Press. ISBN 1-59114-379-9.
The type of net in use had electric contact mines that were triggered from the shore. See: Stern: p. 29.
HMS E7