Re: I want a nautical tattoo :)
There's also Poseidon's trident. If you google search images, some of the designs might give you ideas.
Importantly, be sure to research your tat artists. The last thing you want is to get hep-c bc they aren't running a hygienic business. And even if they are clean, get tested about a year afterwards, anyway. Just to be on the safe side.
As for the minutia? Check out their work (they usually have photo albums), how long they've been in business, etcetera, as well as their setup. Imo, shoot for someone who does custom tats as opposed to flash. That way, you could even draw your own and bring it to them. It is also useful to find out how long it will take. Usually, the more detailed, the longer. Size matters, of course but detail plays an important role as well. Notably, the more detailed, the more painful.
Btw, inner wrist will be not only painful but can be tough for the tat artist due to the tendons that distort the skin. Not saying you shouldn't just more of an fyi.
Anyway, just a few things to think about.