Advice and Scenarios Database



Haddock (Melanogrammus aeglefinus) in Subarea 4, Division 6.a, and Subdivision 20 (North Sea, West of Scotland, Skagerrak)
StockCode (Assessment Component)
had.27.46a20
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19508
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202596.v1






Catch scenarios


Basis
Total catch
Projected landings
Projected discards and industrial bycatch (IBC)*
Ftotal (ages 2–4)
Fprojected landings (ages 2–4)
Fprojected discards and IBC (ages 2–4)
Spawning-stock biomass (SSB)
% SSB change**
% TAC change***
% advice change^
2026 2026 2026 2026 2026 2026 2027 2027 2026 2026
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach: FMSY 108301 91316 16985 0.167 0.104 0.063 470142 -23 -3.7 -3.7
Other scenarios
FMSYlower 101195 85301 15894 0.155 0.097 0.058 475992 -22 -10 -10
Fmsy upper 108301 91316 16985 0.167 0.104 0.063 470142 -23 -3.7 -3.7
F = 0 0 0 0 0 0 0 559222 -8 -100 -100
FPA 108301 91316 16985 0.167 0.104 0.063 470142 -23 -3.7 -3.7
SSB (2027) =Blim 541852 450688 91164 1.57 0.98 0.59 138250 -77 382 382
SSB (2027) = BPA = MSY Btrigger 465741 389448 76293 1.14 0.71 0.43 192109 -68 314 314
F = F2025 41299 34843 6456 0.06 0.037 0.023 525491 -13.6 -63 -63




Symbol Footnotes
* Including below minimum size (BMS) landings, assuming recent discard rate.
** SSB 2027 relative to SSB 2026.
*** Total advised catch in 2026 relative to total allowable catch (TAC) in 2025: Subdivision 20 (5892 tonnes) + Subarea 4 (95 862 tonnes) + Division 6.a (10 681 tonnes) = 112 435 tonnes (Norway–UK–EU, 2024).
^ Total advised catch 2026 relative to the advice value 2025 (112 435tonnes).