 He recommended the refurbishment of the existing Tudor-era Tilbury Fort on the riverbank opposite Gravesend, and the construction of an entirely new fort to replace the older Gravesend Blockhouse, another Tudor-era fortification of which only traces now remain.The new fort would be located to the east of the blockhouse, where it would have a greater reach downriver and would be able to cross its fire with that of Tilbury Fort.With fears increasing of a French invasion in support of their American allies, the government approved Page's proposals and construction began soon afterwards.