90% of Sweden's imports and exports travel by sea at some point.

Omissions

• No official statistic measures 'at some point by sea'; the 90% figure is a repeated estimate from maritime authorities and industry rather than a published statistical series with a defined metric (weight vs. value) and reference year.
• Trafikanalys's goods-flow survey (as reported by Lighthouse) finds that around 69% of imported goods arrive by sea, i.e. clearly below 90% when the direct mode of transport by weight is measured.
• The 90% figure is of long standing and appears in documents that are several years old (government maritime policy publication, Sjöfartsverket news item, Sweship industry page); none of the located sources gives a recent reference year, so the figure could not be updated to 2025/2026 data.
• The claim uses the hedge 'någon gång sjövägen' ('at some point by sea'), which is broader than the direct-mode statistics and is what makes the 90% order of magnitude defensible.

Sources

• PrimarySjöfartsverket (Swedish Maritime Administration) — 'Återhämtningen av passagerartrafiken fortsätter'"Vi får komma ihåg att 90 procent av Sveriges import och export går via sjöfarten."
• PrimaryRegeringskansliet (Swedish Government) — 'Svensk sjöfart' (PDF)"Mer än 90 procent av Sveriges utrikeshandel går via sjöfarten"
• SecondarySvensk Sjöfart / Sweship — 'Om svensk sjöfart'"Sjöfarten är avgörande för Sveriges internationella handel – över 90 procent av landets export och import transporteras sjövägen."
• SecondaryLighthouse (Swedish maritime research centre) reporting Trafikanalys survey — 'Transport to and from Sweden takes place primarily by sea'"According to a survey from Transport analysis, 69 percent of imported goods arrive by sea."