Williams is hopeful that it will be able to compete for podium finishes across the second half of the 2015 season, which begins in Belgium this week.
Williams occupies third in the standings and has claimed two podiums so far in 2015, courtesy of Valtteri Bottas in Canada and Felipe Massa at the following event in Austria.
Williams secured top three finishes in Belgium and Italy last year and the squad is optimistic that its current package will be suited to the demands of upcoming circuits.
"Returning from the summer break we are all refreshed and absolutely raring to go; the team spirit and motivation at Williams is tangible as we look forward to challenging for podium positions in the second part of the year," said head of vehicle performance Rob Smedley.
"Spa should be a circuit that suits the FW37 and we therefore have to capitalise on this.
"The long straights twinned with the long sweeping corners in sector 2 are definitely characteristics where we’ve seen this year’s car perform really well.
"The weather is an important factor in Spa and we therefore have to be ready for all circumstances. We have been doing a lot of homework in this area recently and the team has made excellent inroads."