the war in france, 1545–1546 301
at Ambleteuse were well advanced by February 1547, though the port
works, barrage and ravelin were probably never constructed.
133
e other major work was at cap Gris Nez, the ‘Blackness fort.’
is was begun later and only the cellars were in being by February
1547. Here again, a harbour was envisaged by Rogers, who persuaded
Hertford that a port in this position would ‘do more service for keep-
ing the narrow seas than all your havens on this side.’ is proved
too expensive. He designed the main structure as a quadrilateral fort
with angle bastions. No contemporary plans exist
134
but this building
has been the subject a serious archaeological study since its listing as
a protected site in 1988. is has revealed a substantial masonry struc-
ture with four angle bastions. In fact, the plan is remarkably complete
and the archaeology has revealed much about the internal layout of
the structure.
135
One of the problems for this fort was supply. Despite
plans to make a naval base of it, there was no harbour and so it had
to be supplied by land; this raised constant problems into the reign of
Edward VI.
136
Blackness fort thus completes our understanding of the
fortication strategy of the English government in the Boulonnais.
Curiously, we know much less about the strategy behind the analo-
gous French fortications in Boulonnais during this period at Outreau,
Saint Etienne and le Portel. Rather less documentation for these is
available than for the English works, though we have important nar-
rative sources and some plans. e French wanted to control entry to
the harbour either by stationing a eet o it or by of blocking it. One
of the more strange ideas of 1545 was for an underwater bar, made of
several pillars bound together by iron, to be sunk at the entrance to the
harbour to make it impossible for ships to get in or out.
137
133
Shelby, pp. 75–83; L&P, L&P, XXI, i, 394, 471, 472, 507, 565; esp. Hertford to
Henry VIII, 27 April 1546, NA SP1/217 fo. 114r (L&P, XXI, i, 686); Stourton to Som-
erset, 18 Feb. 1547, CSPF Edward VI, pp. 305–306. Méreau, no. 43, pp. 24–28.
134
Shelby, pp. 83–85; L&P, XXI, i, 1159.
135
Germain Mocquot, ‘Un ouvrage fortié du seizième siècle en Boulonnais: le fort
du Cap Gris Nez,’ Bulletin des amis du fort d’Ambleteuse 42 (1987).
136
E.g. report of Stourton, 4 Feb. 1547; ‘thrugh want of an havin,’ SP68/13, fo. 16v
(CSPF Edward VI, Calais Papers, no. 8); John Rogers to Somerset, 27 March 1547,
SP68/14, fo. 12 (ibid., no. 86): ‘yt is almost unposyble to make sodenlye onny such har-
bor.’ Rogers even later proposed cutting o the fort from the land by a vast ditch.
137
Alvarotti to Ercole II, 9 June 1545, ASM Francia, B 21, fo. 185 (deciph.): ‘dis-
egna inoltre Sua Maestà di fabricare in una nave 3 overo 4 pilastri di preda ben ligati
et rmati con arpesi et cateni di ferro et questa condurla nella boccha del porto di
Bologna et fondarla, et a questo modo fare come ci dire uno scoglio dentro adesso
porto, accio non possino uscire quelli di dentro et meno venire dentro di quelli di