
ID	0088
Class	ARCHITECTURE
Severity	1
Status	blocked

Models: —

Found: Review 2026-09-28: FISH-R-9 (remainder), I-11. 2026-09-28 review of feature/net-hydrodynamics at 73aa0c7 (worktrees/nethydro/review/fhsim_fishery.md and interactions.md); rechecked at 1e6770c; filed by phase K WP K4 (owner ruling R42 item 39)

Decision needed: Owner (Karl-Johan): 3.4.0 (as chosen in 1e6770c: fishery's own interface unchanged) or 4.0.0 (the review: removed input attribute and changed net loads)?

Review 2026-09-28: FISH-R-9 (severity 1, tracker scale) and the fishery part of interactions I-11 (severity 1).

Partly done by 1e6770c ("Consume the set from @sintef/testing: marine elements, environment and base, version 3.4.0"): version.txt is 3.4.0 and the CHANGELOG section is [Unreleased] - 3.4.0 with a Dependencies entry ("fishery's own interface is unchanged"). The review recommended 4.0.0; that choice is what is left.

Evidence

conanfile.py:42-43: fhsim_marine_elements/[>=4.0.0 <5], fhsim_environment/[>=4.0.0 <5] (was [^3.2.0]); version.txt 3.4.0.
The branch removes the MaxAcceleration input from Seine/Cable (FISH-0080, R40); an input that still sets it runs without a warning (see fhsim_marine_elements MARE-0165, review I-14).
Net loads change under the ME 4 default law (doc/user/steady_tow.md §6 shows the law-dependent drag).
I-11: fishery requires fhsim/[^3.3.0] while the others require [^3.2.0]; it resolves, but raises the floor of any graph that includes fishery.

Effect

A 3.x minor bump carries input and behaviour changes that semantic versioning puts in a major.

Possible fix

Release as 4.0.0 after base and ME (R37 order) and say so in the CHANGELOG, or keep 3.4.0 and state why.

Test that would prove it

After the decision: a test of the chosen behaviour.

Risk

Result changes only in the cases named above; check the regression baselines.