Large Transport
Distraction; Situational Awareness
Ground Event / Encounter Other / Unknown
Flight Crew Regained Aircraft Control
Aircraft; Airport; Human Factors; Procedure
SFO was operating 01L/01R for takeoffs. Aircraft X used 01L. About halfway down the runway; Taxiway F crosses 01L and 01R. Ground control crossed Aircraft Y over 01L and held it short of 01R on Taxiway F so that its jet blast was directed across 01L. We were cleared for takeoff.  Normal acceleration and ground roll. At V1; jet blast from Aircraft Y hit Aircraft X causing a noticeable side jolt. We maintained aircraft control; rotated and continued a normal climbout.   Familiarize the SFO Ground and Tower controllers about the hazards of jet wake. Don't position aircraft-- especially heavy aircraft; between 01L/01R with their engine exhaust blowing across either runway. If an aircraft should be there; limit its thrust to idle and don't clear it to taxi until aircraft taking off behind it are clear of the jet blast.
The Tower cleared Aircraft Y across 01L on Taxiway F; to hold short of Runway 01R at SFO. We were then given takeoff clearance on Runway 01L. As we approached the intersection with taxiway F; we were within 5 knots of V1. As we passed by Aircraft Y; we experienced a very brief and very abrupt yaw to the right. After ensuring that aircraft control was maintained; we quickly realized the cause of the yaw and we continued the departure. We then became very busy with a changing departure procedure. During the very short flight; I checked with the FAs who reported no injuries.Do not hold large aircraft between the runways when the runway behind the large aircraft is being used for departures.
Pilot reports of jet blast coming from a heavy aircraft holding between runways that affects departing aircraft.