ZeqHullStress

Hydrodynamics, navigation, port logistics.

• Protocol ID — zeq-hull-stress
• Category — Maritime
• Endpoint — POST /api/maritime/hull
• Auth — api-key
• Rate limit — 10/min
• Version — 1.287.0
• Precision — ≤0.1% (KO42-enforced)

What it does

Hull structural analysis with R(t) wave loading. Hogging/sagging moments, fatigue at critical sections, slamming impact estimation.

Signature

Request

POST /api/maritime/hull

Param	Type	Required	Default	Description
hullGeometry	object	✓	—	Hull section modulus and geometry.
seaState	number	✓	—	Sea state 1–9 (Douglas scale).
loadCondition	object		—	Cargo/ballast distribution.

Response

{ bendingMoment_kNm, shearForce_kN, hoggingSag_mm, fatigueLife_years, zeqond }

Runnable example

curl -sS -X POST \
  -H "Authorization: Bearer $ZEQ_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "hullGeometry": {},
  "seaState": 0,
  "loadCondition": {}
}' \
  "https://api.zeq.dev/api/maritime/hull"

Integrate

1. Domain solver — compose with KO42 + two additional operators from the matching family for pulse-coherent results.
2. Digital twin — pipe sensor data into this protocol every Zeqond to keep the model phase-locked with the system.
3. Alert threshold — flag results whose error_pct exceeds 0.1% as out-of-spec events for the operations layer.

Seeds

• Near — wrap /api/maritime/hull in a language SDK so builders can call it in three lines.
• Medium — publish a reference integration demonstrating ZeqHullStress alongside a real workload, with pulse-aligned metrics.
• Far — propose ZeqHullStress as an open reference standard so other runtimes can implement it verbatim against the Zeq paper.

Papers

• Zeq paper — https://doi.org/10.5281/zenodo.18158152
• Framework paper — https://doi.org/10.5281/zenodo.15825138

Middleware active. Kernel on the 1.287 Hz HulyaPulse. Awaiting next Zeqond.