{"paper":{"title":"Preferential orientation of slender elastic floaters in gravity waves","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Slender elastic floaters in gravity waves rotate to align either along or across the wave direction depending on their stiffness, length and mass.","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Basile Dhote, Frederic Moisy, Wietze Herreman","submitted_at":"2026-04-09T14:55:33Z","abstract_excerpt":"Slender floaters drifting in propagating gravity waves slowly rotate towards a preferential state of orientation with respect to the angle of incidence. This angular drift arises from a wave-induced, second order mean yaw moment. We develop a diffractionless, hydro-elastic theory to compute this mean yaw moment for a thin, flexible structure whose width and thickness are small compared with the wavelength. For floater lengths smaller than half the wavelength, we derive a simple, predictive criterion for the preferred orientation: Soft, short and heavy floaters prefer the longitudinal state, wh"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"For floater lengths smaller than half the wavelength, soft, short and heavy floaters prefer the longitudinal state, while stiff, long and light floaters prefer the transverse state.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The diffractionless hydro-elastic theory assumes the floater width and thickness are small compared with the wavelength and that the structure remains thin and flexible.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Slender floaters in gravity waves prefer longitudinal orientation if soft, short and heavy or transverse if stiff, long and light due to a second-order mean yaw moment.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Slender elastic floaters in gravity waves rotate to align either along or across the wave direction depending on their stiffness, length and mass.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"f92cd515029663ecd217578136588f02555bb7efc5629811b4c29624e2f3d080"},"source":{"id":"2604.08323","kind":"arxiv","version":2},"verdict":{"id":"c6fa2443-a5c9-437f-8119-1418436ba986","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T17:35:55.621898Z","strongest_claim":"For floater lengths smaller than half the wavelength, soft, short and heavy floaters prefer the longitudinal state, while stiff, long and light floaters prefer the transverse state.","one_line_summary":"Slender floaters in gravity waves prefer longitudinal orientation if soft, short and heavy or transverse if stiff, long and light due to a second-order mean yaw moment.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The diffractionless hydro-elastic theory assumes the floater width and thickness are small compared with the wavelength and that the structure remains thin and flexible.","pith_extraction_headline":"Slender elastic floaters in gravity waves rotate to align either along or across the wave direction depending on their stiffness, length and mass."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.08323/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}