Grady-White 282 — Offshore Fishing Setup
powerboat · 12V system · Destin, FL
28-foot center console with dual 100Ah AGM house bank. Day trips only — runs a genset for A/C at the dock. Heavy pull from radar + chartplotter + bait aerator when trolling all day.
Daily load
1,194 Wh
Daily Ah
100 Ah
Battery
200 Ah AGM
Solar
400 W
Load budget
| Load | Watts | Qty | Hrs/Day | Wh/Day |
|---|---|---|---|---|
| Fish Finder | 30 | 1 | 6 | 180 |
| Chartplotter | 25 | 1 | 8 | 200 |
| Radar | 40 | 1 | 3 | 120 |
| VHF Radio (Standby)CRITICAL | 5 | 1 | 12 | 60 |
| Stereo / Speakers | 25 | 1 | 4 | 100 |
| Drink Cooler | 30 | 1 | 10 | 300 |
| Freshwater Pump | 60 | 1 | 0.5 | 30 |
| Washdown Pump | 80 | 1 | 0.5 | 40 |
| Raw Water Pump | 25 | 1 | 2 | 50 |
| Navigation LightsCRITICAL | 15 | 1 | 3 | 45 |
| LED Cabin Light | 5 | 2 | 2 | 20 |
| Phone Charger | 10 | 2 | 2 | 40 |
| Bilge PumpCRITICAL | 30 | 1 | 0.3 | 9 |
Battery bank
1 × 200Ah battery
Your daily consumption is 100Ah. With 1 days of autonomy, you need 100Ah of usable capacity. AGM (Absorbed Glass Mat) batteries should only be discharged to 50% depth of discharge, so you need 199Ah of total capacity. We recommend a 200Ah bank (1 × 200Ah battery), giving you 100Ah of usable capacity — enough for 1 days without any charging.
Solar array
2 × 200W panels · 42A charge controller
Your daily consumption is 1194Wh. With 5 peak sun hours, a 75% system efficiency factor, and AGM (Absorbed Glass Mat) round-trip efficiency of 83%, you need 384W of solar panels. We recommend 2 × 200W panels (400W total). This array will produce approximately 125Ah per day at 12V. You'll need a charge controller rated for at least 42A. MPPT recommended — higher efficiency at this array size.
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