Westminster handles the national record. CadetCore bridges the gap — giving units the local tools they need to plan training, track progress, and manage day-to-day operations that Westminster was never designed for.
CadetCore is an independent project — it is not endorsed by, affiliated with, or produced by the Marine Society & Sea Cadets (MSSC). The Sea Cadets name and logo are used for identification purposes only.
Westminster is the national record — but it wasn't built to help units plan sessions, see who needs what, or manage the day-to-day. CadetCore fills that gap without replacing what already works.
Stop tracking completions in Excel. One system holds everything — accurate, searchable, and always up to date.
Prerequisites and module sequences are enforced automatically. No cadet skips a step.
See unit-wide progress at a glance. Know which cadets are close to completing, and which ranks need attention.
Intelligent recommendations tell you exactly what to teach next, based on coverage, freshness, and prerequisites.
Purpose-built for Sea Cadets, Royal Marines Cadets, and Junior Sea Cadets. Every feature is designed around how units actually run training.
Upcoming nights, rank-by-rank progress, and near-completion alerts at a glance.
Learn more →Intelligent recommendations tell you exactly what to teach next.
Learn more →Full cadet-by-module matrix for every rank, synced with Westminster.
Learn more →Upload CSV exports and review every change before it's applied.
Learn more →Digital class slips with review workflow — no more lost paperwork.
Learn more →Track proficiency awards with expiry tracking and promotion flags.
Learn more →Colour-coded sections, badges, crest, pennant, and RPLE tracking.
Learn more →Log sessions, track 30-hour annual target across five activity types.
Learn more →No lengthy onboarding. No migration headaches. Your unit can be live within a day.
We configure a fresh install with your ranks, modules, and admin account. All Sea Cadet, Royal Marines, and Junior syllabus modules come pre-loaded.
Upload your Westminster CSV exports. The system matches module codes, creates cadet records, and brings in all existing completions automatically.
Use the dashboard to see progress, the session planner to prepare training nights, and class slips to record what's been taught. Everything in one place.
Import Part II Orders from CSV, add manual items, and track awards in a persistent queue
Combined review page for class slips, qualifications, and RPLE items with pending counts
Full rank history with eligibility criteria, proficiency requirements, and effective dates
Privacy policy, data subject rights, data export, and right to erasure built in
Cadets can export all their personal data in a single download
Assign duty senior rates to upcoming training nights
Upload your insignia — it appears in the nav bar and on all emails
Full dark theme saved to your account, follows you across devices
Responsive design works on phones and tablets — install as an app
Individual progress views with completions, awards, boating hours, and export
Password-protected backups with automatic schema migration on restore
Users see update highlights after each release, so they never miss a feature
CadetCore is actively developed. Planned improvements include:
We're not currently accepting new testers, but you can register your interest for the next intake. We'll be in touch when a place opens up.
Currently in closed beta with select Sea Cadet units. Free during pilot phase.