He became director general of the Ceylonese department of the Danish East India Company in 1618 and became commander in chief and governor of Tranquebar upon his seventh arrival in the Indies in 1624.

[3] The Nayak had seen a benefit in bonding with another European power in the hopes of weakening the Portuguese influence in his realm, and he granted the Danes the local fishing village of Tharangambadi, which they quickly renamed Tranquebar (Danish: Trankebar).

Crappé recalls the event:[3] Here, my men, you can see how wonderfully God has helped us precisely because of our information from my good friends in Thanjavur to ask the Regnato Naicguo that the village of Trangenbari – where our office is now located – that the proceeds of this place must now be given to the poor people from ØresundCrappé would send a man named Jan Peitersen to Ceylon to inform admiral Gjedde about the deal.

[1] In his reign, he would be an efficient leader, and already a couple of years after his accession he would establish factories in Bengal at Balasore and Pipli, yet he would not be granted favorable commercial terms by the Mughal emperor despite sending a delegation to Agra in 1626.

[2] It went better in the Sunda Islands, where Crappé would establish trading posts at Achin, Jepara, Banten, Sukadana, Banjarmasin, and Makassar.

[1] In India, he would establish a factory at the trading hub of Masulipatnam, which was originally an unimportant fishing village, yet in the 17th century, its commercial importance began to grow.

[7] Despite Crappé's successful attempts at establishing a far-flung string of Danish factories in Asia, the company would suffer huge financial losses, as the Nightingale got wrecked off the Coast of Bengal by a hurricane.

[6] The cargo, which had the value of 20,000 Danish rigsdaler,[8] was also lost to the hurricane, and this would be the start of a large decline in trade, which was made evident during his successor, Bernt Pessart's, reign.