There are a lot of izakayas in Nagasaki. And they serve fresh sashimi. Of course. Unfortunately I did not find the good deals that I found in Hakodate, but I had at least a good sashimi platter in an izakaya called Ichiba-Kaisen Nagasakirou with English menu (there are not many in Nagaski).
The visit
The izakaya is located in the downtown wharf (Dejima).
It is a large izakaya with an essential decor.
Their sashimi platter had sakae (turban shell) and various types of seafood including fatty tuna. The big fish was hiramasa (yellowtail amberjack), a local catch. On the top of the platter, you can see a silver-striped fish: it is silver-stripe round herring, another local catch.
Miso soup.
And finally the silver-stripe round herrings tempura style.
The check
The big sashimi platter was 3030 yen. The total check was 4,210 yen (39 USD). Not a bad value for this kind of fresh sashimi.
I will also mention that I tried to get a seat at Dejima dining that to me seemed an even better izakaya, but on a Saturday evening it was full.
Where in Nagasaki:
1-1 Dejimamachi | Dejima Wharf 1F.
In Japanese: 長崎市出島町1-1 長崎出島ワーフ 1F.
Website: nagasakikou.com (they also have other two locations with the same menu).