The van plunged into the harbour with Mr Woledge and his 23-year-old work colleague Ashley Donkersley inside. Mr Woledge died while Mr Donkersley survived after a dramatic rescue.
Crisp also admitted falsifying his logbook by recording his finishing time that day as 8.30pm - two-and-a-half hours after the crash.
Police found a total of 17.3 grams of cannabis head material in his car.
No doubt the details of Crisp's actions will cause additional pain to the grieving family of Mr Woledge.
Mr Woledge was dedicated to his young, growing family and a keen sportsman.
His partner Chelsea Findsen, who was pregnant with Mr Woledge's second child at the time of the crash, described him as the "best partner" and "best kind of dad".
His parents, Kevin and Vivienne Woledge, said their son had everything to live for.
They have every right to feel outraged by the actions of the man responsible for causing the crash that claimed his life.