Blackfin tuna fishing out of Dauphin Island means a long offshore day. The local numbers below cover range by trip length, one reef depth, and the trip formats boats use. They can help you decide how far to run and where to look, but they say nothing about whether fish will be there.
When Blackfin Are Around Dauphin Island
Captain T’s lists October as a month when several target species are biting offshore. No blackfin-specific season turned up for this port, so plan an October day with that in mind. For how blackfin behave across the year, see our blackfin tuna species guide.
How Far Boats Run From Dauphin Island
Captain T’s Fishing gives maximum ranges by trip length. These are the numbers to build a run plan around:
| Trip length | Maximum range |
|---|---|
| 4 hours | 40 km |
| 6 hours | 72 km |
| 8 hours | 88 km |
| 12 hours | 160 km |
Use them as a yardstick for your own fuel and range planning. A 160 km ceiling on a 12-hour tuna trip shows how much range your boat needs to carry.
Grounds and Structure Off Dauphin Island
Alabama’s artificial reef structure gives you named reference points on the way out. For offshore structure across the region, see the wider Gulf picture (see also the Gulf of Mexico offshore fishing guide).
Christopher Blankenship Reef Zone
This named reef zone sits at 75 ft. Log that depth on the run out.
The Reef Beyond the Gas Platform
An unnamed artificial reef lies beyond a gas platform. It is known only from a customer review, but it is worth keeping in mind when you plan your route.
How It Is Fished Locally and Who Fishes for Them
Local boats work the offshore day-trip format. The one charter that lists blackfin tuna is the main local reference for how it runs.
The 8- and 12-Hour Offshore Format
Captain T’s Fishing lists offshore 8-hour and 12-hour trips. The 12-hour trips are for grouper or tuna, which puts a tuna day alongside the 160 km ceiling in the range table. For how this format compares elsewhere, see our tuna fishing guides.
Captain T’s Fishing
Captain T’s Fishing booking listing shows blackfin tuna among its targets. The charter runs a 31-foot AmeraCat catamaran with room for 6 passengers, a useful benchmark for the kind of vessel that makes these runs. If you are weighing a Dauphin Island tuna charter against your own boat, a 12-hour charter covers the same format you would have to plan for yourself.
FAQ: Blackfin Tuna Out of Dauphin Island
When do blackfin bite off Dauphin Island?
Captain T’s lists October as a month when several target species are biting. It is not listed as a blackfin-specific season.
How far is the run on a 12-hour trip?
A 12-hour trip covers up to 160 km, per Captain T’s Fishing’s maximum ranges.
How deep is the Christopher Blankenship Reef Zone?
It sits at 75 ft.
Who runs tuna trips from Dauphin Island?
Captain T’s Fishing, with a 31-foot AmeraCat catamaran for 6 passengers. Its 12-hour trips are for grouper or tuna.
Where are the rules for blackfin?
Alabama’s saltwater regulations cover state waters, and the federal Atlantic tunas rules cover federal waters. Check both before you fish.
