Comparing Sea-Flux (also written SeaFlux) for your vessel Safety Management System? Here's an honest look at how SMS Builder stacks up — and which kind of operator each one is really built for. Updated June 2026.
Sea-Flux is a capable platform aimed at larger commercial operations that need configurable workflow management across a fleet — hire, dive, ferry and offshore-support businesses, for example. That power is real, but so is the setup: a configurable platform has to be configured before it earns its keep.
SMS Builder takes the opposite approach. It does one job extremely well — produce and maintain a compliant AMSA / Maritime NZ Safety Management System — and it works the moment you enter your first vessel.
| SMS Builder | Sea-Flux | |
|---|---|---|
| Built for | Owner-operators & small–mid fleets | Larger fleets needing custom workflows |
| Setup time | Minutes | Configuration project |
| AMSA SMS template baked in | Yes | Configured |
| Maritime NZ (Part 19 / MOSS) | Yes | Partial |
| AI photo-to-SMS auto-fill | Yes | No |
| Free tier | Yes (1 vessel) | Limited |
| Best fit | 1–10 vessels, fast compliance | 10+ vessels, custom processes |
Comparison reflects each product's general positioning as of June 2026 and our own assessment — always check current features and pricing on each provider's own website. "Sea-Flux" / "SeaFlux" is a trademark of its respective owner; SMS Builder is an independent product and is not affiliated with or endorsed by it.
A configurable platform like Sea-Flux is a blank canvas — powerful, but you (or a consultant) have to build the picture. SMS Builder ships the picture. The AMSA Marine Order 504 and Maritime NZ Part 19 structure is already there; you just pour your vessel details in and the document assembles itself. For most one-to-ten-vessel operators, that's the difference between compliant this week and compliant after a project.
If you're running a large, multi-discipline fleet and the SMS is only one slice of a much bigger operational-workflow problem, a configurable platform can be worth the setup. SMS Builder doesn't try to be a full fleet-operations suite — it's focused on the SMS document and keeping it survey-ready.
Match the tool to the scale. A configuration platform pays off across a big fleet; an owner-operator just wants a compliant SMS without a project plan.
SMS Builder. There's a free tier for one vessel, the AMSA / Maritime NZ template is built in, and AI photo filing removes most of the manual data entry — no configuration project required.
It depends entirely on scale. Sea-Flux suits large fleets with custom workflow needs. SMS Builder is the faster, simpler, lower-cost choice for getting a compliant SMS document for one to ten vessels.
Yes — AMSA and Maritime NZ (Part 19 / MOSS) are both supported from day one.