Score-siden viser en fiskeegnethetsvurdering per time fra 0 % (farligst / ikke fiskbart) til 100 % (perfekte forhold). Hver rad inkluderer tid, tre scorer (Total, Sikkerhet, Fiske) og korte forklaringer per kategori.

Algoritmen er designet for dypvannsfiske (50–200 m) på den eksponerte norskekysten, der Den norske kyststrømmen (NCC) ofte skjærer inn i og overgår normal tidevannsstrøm. Kjernefilosofien er «Ingen strøm, ingen fisk» — vannbevegelse er den primære drivkraften for fiskeatferd hos dypvannspredatorer som lange, brosme, torsk og sei.

Algoritmedesign

Instead of hard if/else brackets, the algorithm uses continuous mathematical functions — Gaussian curves, sigmoids, and smooth interpolation — to produce a fine-grained, linear 0–100 % scale. Twelve independent variables are each evaluated as a 0.0–1.0 factor. The factors are split into two groups — safety and fishing — then multiplied within each group and combined:

safetyScore  = round( windF × waveF × lightF × wavePeriodF × 100 )
fishingScore = round( currentF × tideF × moonF × precipF × tempF × speciesDepthF × speciesSeasonF × pressureF × lightFishingF × 100 )
totalScore   = round( safetyScore × fishingScore / 100 )

This multiplicative structure means a single dangerous condition (factor → 0) drives the entire score toward 0 %, while excellent conditions require all factors to be high. The split lets users see whether a low score is due to unsafe weather or poor fishing conditions.

Sikkerhetsfaktorer

1. Wind Speed & Current Interaction

Wind affects surface drift, which determines whether deep-water gear can maintain bottom contact.

Safety overrides:

Wind > 15 m/s or gusts > 22 m/s → 0.00 (storm)
Wind > 12 m/s or gusts > 18 m/s → 0.05–0.25 (strong wind)

Wind–current interaction:

Wind opposing current (> 120° difference) → positive — slows drift
Wind aligned with current (< 60°, > 5 m/s) → negative — boat drifts too fast

Below safety threshold, factor decreases smoothly from 1.0 (calm) toward 0.25 (12 m/s). Gusts above 10–12 m/s apply an additional multiplier (0.85–0.92).

2. Wave Height

Affects gear handling efficiency and vessel safety.

Wave height	Factor
≤ 0.5 m	1.00
0.5–1.0 m	0.60–1.00
1.0–1.5 m	0.35–0.60
1.5–2.0 m	0.05–0.35 (worse with wind)
> 2.0 m	→ 0.00 (dangerous)

3. Light & Time of Day

Deep-water fish feed more aggressively in low light. Factor peaks at dawn and dusk.

Condition	Factor	Note
Civil twilight / Dawn / Dusk	1.00	Peak feeding
Overcast daylight	0.85	Fish active
Full daylight	0.80	—
Bright sun + clear sky	0.70	Fish deep
Nautical twilight	0.08–0.20	Dark — poor visibility
Night	0.00	Unsafe

4. Wave Period

Short steep waves are dangerous for small boats. Penalty scales with wave height — below 1.0 m wave height, period has no effect.

Wave period	Factor (at full height)
≥ 10 s	1.00 (comfortable swell)
7–10 s	0.85–1.00
5–7 s	0.60–0.85 (uncomfortable)
< 5 s	0.30–0.60 (steep chop)

5. UV & Drift Ice Warnings (Informational)

UV and drift ice are shown as safety warnings in the reason list. They do not directly change Safety score, but they flag important exposure risks for small-boat trips.

UV ≥ 3: sunscreen reminder
UV ≥ 6: high UV warning
UV ≥ 8: very high UV warning
Sea temperature near/freezing with wind or current drift: drift-ice warning

Fiskefaktorer

5. Ocean Current Speed (Base Score)

The primary fishing driver. A Gaussian curve centred at 0.4 m/s (σ = 0.22).

Current speed	Factor	Meaning
0.0–0.1 m/s	~0.10–0.15	"Dead water" — very low bite rate
0.15–0.24 m/s	0.15–0.55	Slow — some activity
0.25–0.55 m/s	0.80–1.00	Sweet spot — strong feeding
0.6–0.7 m/s	0.55–0.70	Gear drag increasing
0.8–1.0 m/s	0.20–0.45	Highly inefficient
> 1.0 m/s	→ 0.00	Unfishable

When no current data is available, a cautious factor of 0.55 is used — unknown current should not inflate the score.

6. Tidal Phase

Tidal phases dictate biological rhythms at depth and nutrient exchange.

Tide phase	Factor	Rationale
Rising tide	1.00	Peak hunting aggression
Falling tide	0.95	Active water exchange
Turning (±1h from Hi/Lo)	0.85	Movement slowing/starting
Approaching (±2h)	0.75	Moderate movement
Slack tide (exact Hi/Lo)	0.55	Least productive

When no tide data is available, a neutral 0.75 default is used.

7. Moon Phase

Controls the strength of tidal pull — spring tides reach deeper into the water column.

Moon phase	Factor	Effect
New Moon / Full Moon	0.95–1.00	Strongest tidal pull
Waxing/Waning	0.86–0.95	Moderate pull
First/Last Quarter	0.82	Weakest movement

8. Precipitation

Dry or light (≤ 0.5 mm/h) → 1.00
Moderate (0.5–2 mm/h) → 0.93
Heavy (> 2 mm/h) → 0.85

9. Sea Temperature

≥ 3°C → 1.00
< 3°C → 0.92 (reduced fish activity)

10. Barometric Pressure

Pressure	Factor	Meaning
1010–1020 hPa	1.00	Ideal — fish active
1000–1010 hPa	0.95	Good — approaching low
1020–1030 hPa	0.90	Slight penalty — fish sluggish
< 1000 hPa	0.88	Storm-adjacent
> 1030 hPa	0.82	Strong stable high — inactive

11. Species Habitat Depth & Water Column

When a species is selected, NoFish applies a habitat-depth factor based on where that species is typically targeted in the water column (for example upper water, mid-water, or close to bottom over deep ground).

If local seabed depth is within the species' typical habitat range → no penalty (factor 1.00)
If depth is outside the range → gradual penalty (down to ~0.65)
Reason text explains whether depth is optimal, suboptimal, or outside typical habitat

12. Species Seasonality

Species are scored with month-based season windows (prime, shoulder, off-season). This affects the fishing score even when weather is identical.

Prime season → factor 1.00
Shoulder season → factor 0.90
Off-season → factor 0.78

Beste fiskevinduer

The Score page highlights up to 2 non-overlapping windows with the highest average score. The window type depends on your selected fishing method:

Hours with any danger-level condition are excluded
The algorithm picks the longest stretch within 5 points of the best average
If every hour has a danger condition, "No safe fishing periods" is shown
Windows are shown regardless of how low the total score is — even 5 % is shown if safe

In the hourly table, Total score cells within a best window are highlighted with a blue border.

Net-specific fishing windows (6–8 hour soaks)

When you select "Fishing with net" as your method, the algorithm shifts from 1–3 hour windows to 6–8 hour overnight soak windows. This recognizes that net fishing has fundamentally different safety and logistics constraints than active methods.

Why overnight nets require a different algorithm:

Safety at deployment: You need safe conditions to set the net (typically 21:00–23:00 local time)
Safety at retrieval: Conditions 6–8 hours later (04:00–07:00) must also be safe for pickup
No mid-soak escape: Unlike active fishing, you cannot abandon gear if weather deteriorates; the net soaks unattended
Overnight preference: Small-boat net fishing is almost always overnight (less visible, cooler water), so windows are restricted to 21:00–06:00 local time
Gear loss risk: A calm deployment but stormy retrieval = lost net, gear damage, injury

A net-specific window requires:

Set hour: Safety score ≥ 65, no danger conditions, ideally after 21:00
Pickup hour: Safety score ≥ 65, no danger conditions, ideally before 06:00 local time
Soak duration: 6, 7, or 8 hours (the algorithm finds all valid soaks)
Overnight bonus: +10 points to the average score if deployment is after 21:00 AND retrieval is before 06:00

Example: If conditions are calm at 22:00 but will worsen by 04:00 retrieval, the window is flagged as risky and loses the overnight bonus.

Score-fargekoding

Score	Colour	Meaning
70–100 %	Green	Excellent
50–69 %	Light green	Good
35–49 %	Amber	Fair
20–34 %	Orange	Poor
0–19 %	Red	Dangerous / unfishable

See Data Column Reference for source ratings and column descriptions.

Algoritmedesign

safetyScore  = round( windF × waveF × lightF × wavePeriodF × 100 )
fishingScore = round( currentF × tideF × moonF × precipF × tempF × speciesDepthF × speciesSeasonF × pressureF × lightFishingF × 100 )
totalScore   = round( safetyScore × fishingScore / 100 )

Sikkerhetsfaktorer

1. Wind Speed & Current Interaction

Wind affects surface drift, which determines whether deep-water gear can maintain bottom contact.

Safety overrides:

Wind > 15 m/s or gusts > 22 m/s → 0.00 (storm)
Wind > 12 m/s or gusts > 18 m/s → 0.05–0.25 (strong wind)

Wind–current interaction:

Wind opposing current (> 120° difference) → positive — slows drift
Wind aligned with current (< 60°, > 5 m/s) → negative — boat drifts too fast

Below safety threshold, factor decreases smoothly from 1.0 (calm) toward 0.25 (12 m/s). Gusts above 10–12 m/s apply an additional multiplier (0.85–0.92).

2. Wave Height

Affects gear handling efficiency and vessel safety.

Wave height	Factor
≤ 0.5 m	1.00
0.5–1.0 m	0.60–1.00
1.0–1.5 m	0.35–0.60
1.5–2.0 m	0.05–0.35 (worse with wind)
> 2.0 m	→ 0.00 (dangerous)

3. Light & Time of Day

Deep-water fish feed more aggressively in low light. Factor peaks at dawn and dusk.

Condition	Factor	Note
Civil twilight / Dawn / Dusk	1.00	Peak feeding
Overcast daylight	0.85	Fish active
Full daylight	0.80	—
Bright sun + clear sky	0.70	Fish deep
Nautical twilight	0.08–0.20	Dark — poor visibility
Night	0.00	Unsafe

4. Wave Period

Short steep waves are dangerous for small boats. Penalty scales with wave height — below 1.0 m wave height, period has no effect.

Wave period	Factor (at full height)
≥ 10 s	1.00 (comfortable swell)
7–10 s	0.85–1.00
5–7 s	0.60–0.85 (uncomfortable)
< 5 s	0.30–0.60 (steep chop)

5. UV & Drift Ice Warnings (Informational)

UV and drift ice are shown as safety warnings in the reason list. They do not directly change Safety score, but they flag important exposure risks for small-boat trips.

UV ≥ 3: sunscreen reminder
UV ≥ 6: high UV warning
UV ≥ 8: very high UV warning
Sea temperature near/freezing with wind or current drift: drift-ice warning

Fiskefaktorer

5. Ocean Current Speed (Base Score)

The primary fishing driver. A Gaussian curve centred at 0.4 m/s (σ = 0.22).

Current speed	Factor	Meaning
0.0–0.1 m/s	~0.10–0.15	"Dead water" — very low bite rate
0.15–0.24 m/s	0.15–0.55	Slow — some activity
0.25–0.55 m/s	0.80–1.00	Sweet spot — strong feeding
0.6–0.7 m/s	0.55–0.70	Gear drag increasing
0.8–1.0 m/s	0.20–0.45	Highly inefficient
> 1.0 m/s	→ 0.00	Unfishable

When no current data is available, a cautious factor of 0.55 is used — unknown current should not inflate the score.

6. Tidal Phase

Tidal phases dictate biological rhythms at depth and nutrient exchange.

Tide phase	Factor	Rationale
Rising tide	1.00	Peak hunting aggression
Falling tide	0.95	Active water exchange
Turning (±1h from Hi/Lo)	0.85	Movement slowing/starting
Approaching (±2h)	0.75	Moderate movement
Slack tide (exact Hi/Lo)	0.55	Least productive

When no tide data is available, a neutral 0.75 default is used.

7. Moon Phase

Controls the strength of tidal pull — spring tides reach deeper into the water column.

Moon phase	Factor	Effect
New Moon / Full Moon	0.95–1.00	Strongest tidal pull
Waxing/Waning	0.86–0.95	Moderate pull
First/Last Quarter	0.82	Weakest movement

8. Precipitation

Dry or light (≤ 0.5 mm/h) → 1.00
Moderate (0.5–2 mm/h) → 0.93
Heavy (> 2 mm/h) → 0.85

9. Sea Temperature

≥ 3°C → 1.00
< 3°C → 0.92 (reduced fish activity)

10. Barometric Pressure

Pressure	Factor	Meaning
1010–1020 hPa	1.00	Ideal — fish active
1000–1010 hPa	0.95	Good — approaching low
1020–1030 hPa	0.90	Slight penalty — fish sluggish
< 1000 hPa	0.88	Storm-adjacent
> 1030 hPa	0.82	Strong stable high — inactive

11. Species Habitat Depth & Water Column

If local seabed depth is within the species' typical habitat range → no penalty (factor 1.00)
If depth is outside the range → gradual penalty (down to ~0.65)
Reason text explains whether depth is optimal, suboptimal, or outside typical habitat

12. Species Seasonality

Species are scored with month-based season windows (prime, shoulder, off-season). This affects the fishing score even when weather is identical.

Prime season → factor 1.00
Shoulder season → factor 0.90
Off-season → factor 0.78

Beste fiskevinduer

The Score page highlights up to 2 non-overlapping windows with the highest average score. The window type depends on your selected fishing method:

Hours with any danger-level condition are excluded
The algorithm picks the longest stretch within 5 points of the best average
If every hour has a danger condition, "No safe fishing periods" is shown
Windows are shown regardless of how low the total score is — even 5 % is shown if safe

In the hourly table, Total score cells within a best window are highlighted with a blue border.

Net-specific fishing windows (6–8 hour soaks)

Why overnight nets require a different algorithm:

Safety at deployment: You need safe conditions to set the net (typically 21:00–23:00 local time)
Safety at retrieval: Conditions 6–8 hours later (04:00–07:00) must also be safe for pickup
No mid-soak escape: Unlike active fishing, you cannot abandon gear if weather deteriorates; the net soaks unattended
Overnight preference: Small-boat net fishing is almost always overnight (less visible, cooler water), so windows are restricted to 21:00–06:00 local time
Gear loss risk: A calm deployment but stormy retrieval = lost net, gear damage, injury

A net-specific window requires:

Set hour: Safety score ≥ 65, no danger conditions, ideally after 21:00
Pickup hour: Safety score ≥ 65, no danger conditions, ideally before 06:00 local time
Soak duration: 6, 7, or 8 hours (the algorithm finds all valid soaks)
Overnight bonus: +10 points to the average score if deployment is after 21:00 AND retrieval is before 06:00

Example: If conditions are calm at 22:00 but will worsen by 04:00 retrieval, the window is flagged as risky and loses the overnight bonus.

Score-fargekoding

Score	Colour	Meaning
70–100 %	Green	Excellent
50–69 %	Light green	Good
35–49 %	Amber	Fair
20–34 %	Orange	Poor
0–19 %	Red	Dangerous / unfishable

See Data Column Reference for source ratings and column descriptions.

Fiskescore-algoritmen

Algoritmedesign

Sikkerhetsfaktorer

1. Wind Speed & Current Interaction

2. Wave Height

3. Light & Time of Day

4. Wave Period

5. UV & Drift Ice Warnings (Informational)

Fiskefaktorer

5. Ocean Current Speed (Base Score)

6. Tidal Phase

7. Moon Phase

8. Precipitation

9. Sea Temperature

10. Barometric Pressure

11. Species Habitat Depth & Water Column

12. Species Seasonality

Beste fiskevinduer

Net-specific fishing windows (6–8 hour soaks)

Why overnight nets require a different algorithm:

Score-fargekoding

Laster score...

Fiskescore-algoritmen

Algoritmedesign

Sikkerhetsfaktorer

1. Wind Speed & Current Interaction

2. Wave Height

3. Light & Time of Day

4. Wave Period

5. UV & Drift Ice Warnings (Informational)

Fiskefaktorer

5. Ocean Current Speed (Base Score)

6. Tidal Phase

7. Moon Phase

8. Precipitation

9. Sea Temperature

10. Barometric Pressure

11. Species Habitat Depth & Water Column

12. Species Seasonality

Beste fiskevinduer

Net-specific fishing windows (6–8 hour soaks)

Why overnight nets require a different algorithm:

Score-fargekoding