Md-11 flight crew reported aircraft slow to accelerate during takeoff.

Attributes
ACN	1752666
Time
Date	202007
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Autothrottle/Speed Control
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

After setting normal takeoff power; we experienced less-than-expected acceleration; rotating near 3;000 ft. Remaining and lifting off with less than 2;000 ft. Remaining on a very long runway.[suspect] water intrusion during loading.crew believes water intrusion into the cargo or aircraft loading areas or electronics bays caused decreased performance or performance indications.

Original NASA ASRS Text

Title: MD-11 Flight Crew reported aircraft slow to accelerate during takeoff.

Narrative: After setting normal takeoff power; we experienced less-than-expected acceleration; rotating near 3;000 ft. remaining and lifting off with less than 2;000 ft. remaining on a very long runway.[Suspect] Water intrusion during loading.Crew believes water intrusion into the cargo or aircraft loading areas or electronics bays caused decreased performance or performance indications.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.