The Spirit of Tasmania while no where near as quick as flying here is the only way to get here if you plan on bringing your own vehicle with you.
Both Day and Night sailing options are available during the peak tourism season over the summer months with only the night sailing option available during the winter and off peak months.
A single adult ticket will set you back between $100 and $300 depending on demand and time of year. Getting your vehicle on is relatively easy depending on demand so it's worth booking early if you need to. Costs vary depending on the size and type of vehicle.
For way more information than we can accurately give you here check out the Spirit of Tasmania website.