Seadays started with a simple problem: keeping track of days outside the UK for the Seafarers' Earnings Deduction (SED) shouldn't be complicated. Built by a UK seafarer for seafarers, Seadays helps you log time abroad, understand rolling eligibility based on HMRC HS205, and stay audit‑ready with clear records and exports.
What's in Early Access
- Fast logging of periods outside the UK
- Rolling status based on HS205 day‑counting rules
- Simple exports to share with an accountant or keep for your records
What's next
We're exploring document uploads and guided onboarding. Early Access participants will get priority access and perks when new features launch.
Help shape Seadays
Join Early Access and tell us what would make your SED record-keeping easier. During Early Access, we offer 1:1 onboarding—email your voyage dates and we'll help load them for you.