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Summary
The Mackinaw was identified in March and April 1962 Beaver Island reports as a Coast Guard icebreaker that delivered fuel to Beaver Harbor and encountered 27 inches of blue ice.
Evidence and limits
The local reports establish the named vessel and reported delivery, but not its official number, dimensions, builder, or full service history.
Sources
- Names Mackinaw as a Coast Guard icebreaker planned to bring 2,000 gallons of gasoline to Beaver Harbor on March 9, 1962. This source-bounded record supplies no official number, dimensions, builder, or verified arrival.data1 · beaver-island-archive · beaver_beacon · 1962-03_Beaver-Beacon
- The held six-page issue scan is paired with the OCR source and confirms the published notice or report; it does not expand the source-specific identity, event, or outcome claims.data1 · beaver-island-archive · scans · beaver_beacon · issues · 1962-03_Beaver-Beacon
- Reports Mackinaw’s March 5 fuel delivery and 27-inch blue-ice measurement. The source supplies no official number, dimensions, builder, or registry.data1 · beaver-island-archive · beaver_beacon · 1962-04_Beaver-Beacon
- The held six-page issue scan is paired with the OCR source and confirms the published notice or report; it does not expand the source-specific identity, event, or outcome claims.data1 · beaver-island-archive · scans · beaver_beacon · issues · 1962-04_Beaver-Beacon
Added 1 August 2026 · revised 3 August 2026. Recent changes
Cite this article
Beaver Island Archive, “Mackinaw”, https://beaverislandarchive.org/vessels/mackinaw-coast-guard-icebreaker-1962/, accessed [date], citing Beaver Beacon, March 1962, “Snow Causes Problems.” (and 3 further sources listed on the page).
Last revised 2026-08-03. Fill in [date] with the date you read it — this page is static and cannot know that.