If you loved Van Helsing, try Deep Rising
A bridge between a film you've already seen and one most people haven't. Deep Rising has roughly 8.2× fewer votes than Van Helsing — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Stephen Sommers, and they both carry the unhinged mood tag, and they sit in Action / Adventure / Horror territory. If that's the register that drew you to Van Helsing, the second film will land in a comparable space — through a different lens.
What Deep Rising is
South Pacific. Night. A splash. Mercenaries swarm a luxury liner for easy plunder, only to find the ship already preyed upon. Monstrous tentacles drag the crew into the dark below. Sommers' schlocky creature-feature does not skimp on practical effects.

