

The maritime power of Holland was concentrated around the Zuiderzee (an inland sea). The early exploration ships left from these Zuiderzee ports: Amsterdam, Enkuizen, Hoorn... However, because of the low depth of the Zuiderzee seabed, large vessels had to sail by North Sea harbours such as Middelburg, Vlissingen and the 'rede' of Texel.
Emigration from Holland happened mainly through: