Hi Erlend, indeed page 365 - a rather small section ("Section 5 Concrete Shis").

Here it goes:

Production of concrete vessels during the war was confined to the building of large numbers of barges by assembly line method and which dit not bite into steel stocks or tap the skilled labour of shipyards. However, there were als two cargo ships built of ferro-concrete, the first of which commenced trials in December 1941; the second was built by cement interests and not to Admiralty order.

Built by W. & C. French Ltd., Newport, Mon.

- Lady Wolmer, 1.883 gt. 277.3 ft (oa)
268.1 ft x 42.3 ft. Engines: oil
Launched: 12.1941
Completed: 4.1942 for Ministry of War Transport
(Managers: Walford Lines Ltd.)
1947: (Eastern Asia Navigation Co. Ltd. (Wheelock, Marden & Co. Ltd., Hong Kong))
20.5.1953: Ashore of Cheju Island, South Korea, 33.32N 126.50 E. Total loss (voyage: Kobe/Pusan and Indian - general)

555 Lady Kathleen 1.857 gt, 277 ft (oa)
266.3 ft x 41.9 ft. Engines: Oil
Launched: 2.4.1943
Completed: 9.1943 for Concrete Maritime Ltd.
(Managers: Wm. Cory & Son Ltd.).
1947: (D/S A/S Phoenix (Paal Wilson & Co. A/S, Norway))
29.11.1951: Dragged anchor and ashore in Riga Bay, Latvia, during a gale.
1.12.1951: Broke in tow. Total loss (voyage: Helsinki/Riga - ballast)

W. & C. French Ltd. also built a number of barges at their Grays, Essex yard. All were of ferro-concrete, with rolled steel framing. They were 107.5 ft. x 25 ft and 192 gt. They were for service on the River Thames and in the port of London; were classed as experimental and subject to annual survey. In 1945 all were in the ownership of F.T. Everard & Sons Ltd., London. They were:

Yard No.:
WCF.2 St. Anne Completed: 8.1943
WCF.3 St. Asalph Completed: 9.1943
WCF.4 St. Austell Completed: 1.1944
WCF.5 St. Bees Completed: 3.1944
WCF.6 St. Mawes Completed: 1944
WCF.7 St. Michael Completed: 1944

(to be continued in 2nd post)