SOUNDING — Fishery Sonar

SOUNDING — the sonar station of a factory vessel on an ocean world. An amber echogram, a rising mass the size of a city, and a correlation the licensing authority never asked for. A cinematic FUI scene from SCENESCAPES Channel 28.

◀ SCENESCAPES / 28 / SOUNDING
F/V SOUNDING · ISKRAY · FACTORY VESSEL
SONAR ODUYA, N.
NIGHT 19 · SEASON 11 · WATCH 2
OST22:31:40
S 61°12.40′ E 142°08.91′ · 3.4 kn
SHELF UPPER EDGE 112 m ↑ 0.9 m/s · ETA KEEL 22:38
Δ NET TARGET 22.0 m · CORE −38 dB AT 194 m · ONSET 22:10 AT 1,200 m · THICK 298 m
EDGE CORRELATION
ONE COHERENT TARGET?
r = 0.94 ▲
VQA-2271CLASS 4
TAKEN 8,412 / 11,000 t
ISKRAY QUOTA AUTHORITY · REMAINING 2,588 t
ECHOGRAM · Sv · ES38-7 SPLIT-BEAM PING 061,284 · 22:31:40 · BOTTOM 1,281.4 m
38120200kHz
TVG 20logR · GAIN −12 dB · PULSE 1.024 ms Sv THR −70 dB · c 1,492.6 m/s
GATE 080–140 m · Sv −41.3 dB sA 1,284 m²/nmi² · ρ 0.96 kg/m³
HIST 4.2 s/px ◂ │ ▸ LIVE 1 px/PING L1 TRACK · BOTTOM LOCK · RELAY W+E
SECTOR SONAR · SX-26 · FWD 120°SWEEP 00% · BRG 154°
26 kHz · RANGE 8 km · TILT −2.0° · HDG 214°
INTERCEPT 3.21 km SHELF EXTENT > 8 km ALL BRG EDGE W · TALLOW 20.1 km 270° EDGE E · CAIRN 19.8 km 090°
CTD · CAST 0419 · 21:58YO-YO 07 ↓
T ━ · S ╍ · O₂ ┈ · REF DIM
ROSETTE 0000 m · T 17.62 °C S 34.620 · O₂ 6.08 mL/L
EDGE CROSS-CORRELATION · W ⇄ E · 40.0 km APARTRELAY 0.84 / 0.91 s
r(0) · DETRENDED · 20 min
r =0.94
0.9442 ▲
LAG 0.0 s · n = 1,200 · neff 44
RANDOM SCHOOL EXPECTED r < 0.3
ONE COHERENT TARGET? · CONF 0.94
QUOTA LEDGER · VQA-2271 · SEASON 11SYNC 22:31:36
SEASON 11,000 t TAKEN 8,412 t REMAINING 2,588 t NIGHTS 19 / 42
HAULNIGHTSETHDLNCATCH tMEAN cmσCLASSFROZEN
BIOMASS CLASS 4 PELAGIC · RENEWABLE · ISKRAY QUOTA AUTHORITY · VQA-2271 · TAC 11,000 t · LAST SURVEY 4 y · NO OBSERVER
WINCH / DECK · W1 + W2 · MW-44 MIDWATER TRAWL SEQ 3/5 · SHOOT 22:40:00 · BRIDGE HOLDS
HOLD · BRAKE SET
NETS IN 22:40CAPTAIN · HOLD
T−00:08:20
WARP OUT1,240mPORT 1,240.4 · STBD 1,239.6
TENSION38kNP 19.2 · S 18.8 · LIM 96
SPOOL RATE0.0m/sLAYER 7/9 · LW 0.42 m
NET OPENING22 × 18mDOORS 118 m · SONAR OK
HEADLINE88mFOOTROPE 106 m · SHELF −24 m
TOW · SOG3.4knSTW 3.1 kn · SET 238° 0.4 m/s
HDLN SONAR88.2 m · 17.1 °C DOORS118 m CATCH 1○ CATCH 2○ CATCH 3○ BATT91 % LINK−61 dB
CURRENTS · ADCP 75 kHz · ENS 6 sENS 3,118
0–5050–150150–400400–1300m