Bow swell
From BAWiki
Definition
Long-periodic raising of the water level directly in front of the bow of a moving ship (stagnation point) due to the cross-sectional narrowing and the diversion of flow lines (roughly comparable to a pillar jam), part of the primary wave system.
Synonyms
backwater at the bow
Abbreviations
Source
translated from "Gutachten zum Donauausbau, Bundesanstalt für Wasserbau, Karlsruhe, 2001" by Alejandro and Hannah Carrizo