@article{Mohamed_Hu_2026,
	author = {Mohamed, Abdella and Hu, Xiangyu},
	title = {Bathymetry- and Sea-Ice-Constrained Feasibility Screening for Trans-Arctic Navigation},
	journal = {TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation},
	volume = {20},
	number = {3},
	pages = {539-545},
	year = {2026},
	url = {./Article_Bathymetry-_and_Sea-Ice-Constrained_Mohamed,79,1682.html},
	abstract = {Arctic route planning requires an initial assessment of whether candidate corridors are physically navigable before detailed voyage optimisation, vessel-performance modelling, or operational risk assessment is attempted. This paper presents a reproducible feasibility-screening workflow for trans-Arctic navigation under bathymetry and sea-ice concentration constraints. A regular pan-Arctic routing grid is constructed over 40–85â—SN and 20â—SW–180â—SE for a Rotterdam–Yokohama case study. GEBCO 2024 bathymetry is used to exclude land and shallow-water cells, while CMEMS Arctic sea-ice concentration fields are used to exclude cells above selected ice-screening thresholds. The remaining feasible cells are represented as a graph, and A-star search with geodesic edge costs is used to compute shortest feasible routes. The contribution lies in the transparent integration of bathymetry and sea-ice screening into a reproducible navigation-feasibility workflow, rather than in proposing a new shortest-path algorithm. The case study evaluates a bathymetry-only baseline, date-dependent sea-ice feasibility maps, seasonal route-distance behaviour, and sensitivity to sea-ice concentration thresholds. The results show how route availability and route-distance ratio vary with the selected environmental screening assumptions. The workflow provides a practical pre-routing layer for Arctic navigation studies and can support later integration with vessel-performance, risk, and voyage-planning models.},
	doi = {10.12716/1001.20.03.02},
	issn = {2083-6473},
	publisher = {Gdynia Maritime University, Faculty of Navigation},
	keywords = {Safety of Navigation, Risk Assessment, Ice Navigation, Marine Environment, Methods and Algorithms, Arctic Shipping, Route Planning and Weather Navigation, Hydrometeorological Aspects}
}