In Eve, one can easily look up the base stats for various ships by checking their info pages from the market.
The interceptors are probably the fastest ship class in the game, but it's hard to figure out which interceptor is the fastest after skills and fittings are taken into account.
So assuming the best possible max speed fittings and skills, which ship is the fastest?
13 Answers
The Dramiel is the fastest Frigate in EVE.
The Claw is the fastest of the Interceptor group, but a Dramiel running an MWD is faster because of its lower mass, since MWD speed boost is affected by ship mass.
Things that affect speed are
- Base speed of ship
- Low slots (using Overdrive Injector II1)
- Mid slot (using one 1MN MicroWarpdrive II)
- Rigs (using Small Auxiliary Thrusters II1)
- Navigation Skill
- Acceleration Skill (when using the MWD)
- Ship mass (when using MWD)
- Implant bonuses (e.g. the Snake Set)2
- Leadership and Gang Assist bonuses2
Here's a table with the calculated speeds (base ship speed, max fitted/rigged and MWD, each without skill bonus and finally with all skills at level V3): 
Here are the results as CSV. They were calculated from a subset of the CCP database export with this Python script, using the speed formulas from the top speed calculation guide and the Aenigma formula for bonus stacking penalties. Some calculated speeds were cross-checked against Pyfa.
1 The speed bonuses from the Overdrive modules and Rigs are subject to severe stacking penalties, making it fairly useless to cram more than 2-3 of these in your ship in total. However for the purpose of finding the fastest ship it was assumed that all ships had their low slots full of Overdrive modules and their Rig slots full of Auxiliary Thrusters. This is not a sensible build to fly around in though.
2 These bonuses affect the velocity directly and therefore don't matter for a ship comparison. They were not taken into account here.
3 Due to neither implants nor Leadership/Gang bonuses being applied, this is not the fastest these ships can go.
The fastest T1 Frigate is Pumisher with 50MN (medium-size) MWD This will be 8136 m/s (11954 m/s hot) for omega clone and 7224 m/s (10596 m/s hot) for alpha clone, assuming no drug, no boosters, no implants and only meta or T2 modules
[Punisher, F: cap-stable, $7.5M] Overdrive Injector System II Capacitor Power Relay II Capacitor Power Relay II Micro Auxiliary Power Core I Micro Auxiliary Power Core I 50MN Cold-Gas Enduring Microwarpdrive Cap Recharger II [Empty High slot] [Empty High slot] [Empty High slot] [Empty High slot] Small Ancillary Current Router I Small Ancillary Current Router I Small Ancillary Current Router II The punisher above is nice, but with the right skills you can fit it this way for 8476m/s without overdrive (omega clone). Eking out a little over 300 more m/s. Of course, it also costs a bit more
[Punisher, Go Fast 29m isk] Navy Micro Auxiliary Power Core Navy Micro Auxiliary Power Core Overdrive Injector System II Capacitor Flux Coil II Nanofiber Internal Structure II 50MN Y-T8 Compact Microwarpdrive Small Cap Battery II Small Ancillary Current Router I Small Capacitor Control Circuit II Small Ancillary Current Router II