Looks like it may be one of the 40K MTBs.
Boats specifications;
30 (23)t
L. 20,2 m.
W.5,00 m.
Depth 0.90 m.
Deep V hull design
4 Lorraine Petrél Otto Engines 600hp each,for slow and manoevering 2 auxiliairy engines of 100 hp each.
2 propshafts
Crew 8
Speed 40Kn/15Kn
An Anglo-French prototype boat, 40K, used the hard chine design.
The boats were originally ordered by the French Navy, but the order was canceled,for engine delivery reason.
So the boats were built as Prototype 40K for 1937 export order to the Republican Spanish Navy,on different several shipyards.
SA 1 built by Jouett&Cie ,Sartrouville '40-'41
SA 2-4,6,7 built by Chant.Romano ,Antibes '40-'42
SA 5 built by Chant. Navales de Meulan '40-'41
SA 8,9 built by Chant. de la Loire St. Nazaire '40-'42
Capured by German troops and never commisioned to French or Spanish Navy,the boats were deployed as various comissions and armament variations ,1 machine cannon 3,7cm and 1 MG.
Although designed for having 2 torpedo tubes onboard ,these were never fitted.
SA 1 was commisioned 04.'41 to Wachboot Abwehrleitstelle Le Havre, after 1942 FH 24 to Hafenschutzflottile Le Havre.
SA 2 was commisioned 09.'41 to Admirality Norway,later known as FH 25 to Hafenschutzflottile Le Havre.
SA 3 was commisioned 10.'41 to Admirality Norway, ran aground at Börsmose westcoast of Denmark 24.04.1942,was lifted by salvage company,engines to Kriegsmarine, wreck to salvage company(Claus D. Sörensen).
SA 4 was commisioned 11.'41 to Lehrflotille Le Havre,later known as FC 40 to Hafenschutzflottile Cherbourg.
SA 5 was commisioned 10.'41 to Lehrflotille Le Havre,after 1942 FK 2 to Hafenschutzflottile Kanalküste.Granville or St Malo
SA 6 was commisioned 04.'42 to Flak-und Küstenartillerieschule.
SA 7 was commisioned 06.'42 Damaged by bomb whilst being built,repaired, to FK 3 Hafenschutzflottile Kanalküste. After 1943 to Flak-und Küstenartillerieschule.
SA 8 was commisioned 06.'42 ,1943 FK 58 to Hafenschutzflottile Kanalküste.Granville or St Malo
SA 9 was commisioned 06.'42 ,1943 FK 59 to Hafenschutzflottile Kanalküste.Granville or St Malo
Here is an album:
http://www.mijnalbum.nl/Album=QRLWS8SR
Dave G
The PT Dockyard