ACTV operates 20+ vaporetto lines. Here are the 5 that matter for visitors.
Plan your trip โEvery stop. Piazzale Roma โ Ferrovia (Santa Lucia station) โ San Marcรฒla โ Caโ dโOro โ Rialto โ SantโAngelo โ Caโ Rezzonico โ Accademia โ San Marco. 45 min. The scenic route. Take it at least once, ideally at sunset.
Fewer stops: Piazzale Roma โ San Tomร โ Rialto โ San Marco โ Giudecca โ Tronchetto. 25 min. Use for commuting, not sightseeing.
Fondamente Nove โ Murano (Faro) โ Mazzorbo โ Burano โ Torcello. Allow a full day: Murano (glass, 1h), Burano (colored houses + lace, 2h), Torcello (Byzantine mosaics, 1h).
Fondamente Nove โ Murano. Faster than Line 12 if only going to Murano.
After midnight, the N lines cover main routes. Every 20โ40 min. Same ticket/pass.