 Scratchley had inspected the proposed South Australian fort sites , and Jervois and Scratchley were both responsible for the final fort design and location . The first fort was erected to guard both the entrance to Port Adelaide and the anchorage at Semaphore . It was built on sandhills near Glanville Hall at Semaphore , on a promontory called " Point Malcom " — a name that is now used for an adjacent reserve . The site was chosen so as to best guard shipping sailing to both the Port River and the Outer Harbour ; and a second northern fort was to protect the entrance to Port River itself . At the time of its construction it was seen as a defence against foreign threats , mainly Russian . Scratchley had offered to design the battery , the offer accepted by Cabinet in January 1878 , and he was primarily responsible for the design of both Fort Glanville and Fort Largs . The plans were drawn by Alexander Bain Moncrieff of the South Australian Engineer @-@ in @-@ Chief 's Department , supervised by Scratchley in his Melbourne headquarters . Moncrieff , at Scratchley 's suggestion , was later to supervise the fort 's construction . Plans for both batteries were completed in June 1878 , tenders called for in July and the contract for Fort Glanville awarded in August to John Robb of Kapunda , South Australia for the sum of £ 15 @,@ 893 12s 7d . 
 Scratchley <a href='been_done' title='1'><mark>had</mark></a> inspected the proposed South Australian fort sites , and Jervois and Scratchley <a href='uninflect' title='2'><mark>were</mark></a> both responsible for the final fort design and location . The first fort was erected to guard both the entrance to Port Adelaide and the anchorage at Semaphore . It was built on sandhills near Glanville Hall at Semaphore , on a promontory called " Point Malcom " — a name <a href='null_relcl' title='3'><mark>that</mark></a>is now used for an adjacent reserve . The site was chosen so as to best guard shipping sailing to both the Port River and the Outer Harbour ; and a second northern fort was to protect the entrance to Port River itself . At the time of its construction it was seen as a defence against foreign threats , mainly Russian . Scratchley <a href='been_done' title='4'><mark>had</mark></a> offered to design the battery , the offer accepted by Cabinet in January 1878 , and he was primarily responsible for the design of both Fort Glanville and Fort Largs . The plans <a href='uninflect' title='5'><mark>were</mark></a> drawn by Alexander Bain Moncrieff of the South Australian Engineer @-@ in @-@ Chief <a href='null_genetive' title='6'><mark>'s</mark></a>Department , supervised by Scratchley in his Melbourne headquarters . Moncrieff , at Scratchley <a href='null_genetive' title='7'><mark>'s</mark></a>suggestion , was later to supervise the fort <a href='null_genetive' title='8'><mark>'s</mark></a>construction . Plans for both batteries <a href='uninflect' title='9'><mark>were</mark></a> completed in June 1878 , tenders called for in July and the contract for Fort Glanville awarded in August to John Robb of Kapunda , South Australia for the sum of £ 15 @,@ 893 12s 7d . 
Scratchley done inspected da proposed South Australian fort sites , and Jervois and Scratchley was both responsible fir the final fort design and location . Tdafirst fort was erected to guard both the entrance to Port Adelaide and thdanchorage at Semaphore . It was built on sandhills near Glanville Hall at Semaphore , on a promontory called " Point Malcom " — a name is now used fa an adjacent reserve . The site was chosen so as to best guard shipping sailing to both thedart River and the Outer Harbour ; and a second northern fort was to protect the darance to Port River itself . At the tda of its construction it was seen as a defence against foreign threats , mainly Russian . Scratchley done offered to design the badary , the offdaaccepted by Cabinet in January 1878 , and he was primarily responsible for the design of both Fort Glanville and Fort Largs . The plans was drawn by Alexander Bain Moncrieff of the South Australian Engineer @-@ in @-@ Chief  Department , supervised by Scratchley in his Melbourne headquarters . Moncrieff , at Scratchley  suggestion , was later to supervise the fort  construction . Plans for both batteries was completed in June 1878 , tenders called for in July and the contract ffaFort Glanville awarded in August to John Robb of Kapunda , South Australia for the sum of £ 15 @,@ 893 12s 7d .