B737 Take off V speeds versus weight
Various Boeing documents state that take off V speeds are a function of actual BRW. This means if the actual BRW is significantly less than the performance limiting weight and for operational reasons the pilot decided to use full rated thrust, then the V speeds chosen reflect the actual BRW.
Others have a different view in that regardless of the actual BRW, if the pilot decides to use full power for take off, then the V speeds used must be those of the performance limiting weight - not the actual BRW. Example; If the performance limiting BRW is 65 tonnes (requires full thrust) but the actual BRW is 55 tonnes (but the pilots wants to use full thrust anyway) then the V speeds for 65 tonnes are to be used.
Which is correct?