Henry Sullivan

First successful Channel swim by an American

Sources disagree

Sullivan completed his crossing after repeated attempts over ten years. The Alexander Cup commemorates a breaststroke performance on 5–6 August 1923. A contemporary report describes a difficult tide near France and says the Daily Sketch paid its prize despite having no newspaper representative in the escort boat.

Contemporary reports disagree: 7 August papers give 26h50m, while an 8 August AP report gives 27h25m. The selected CSA and trophy time remains 26h50m.

Elapsed swim time · 26h 50m

26h50m in CSA, the Alexander Cup inscription and contemporary 7 August reports

Started · Sunday, 5 August 1923 · 17:15 · Dover Museum departure-photo caption; time zone not specified

Finished · Monday, 6 August 1923 · 20:05 · Contemporary Exchange Telegraph account and Associated Press reports; clock standard not stated

Timing note · The departure-photo caption gives 17:15 on 5 August. A London dispatch dated 6 August, printed in the Daily Mail on 7 August and attributed to Exchange Telegraph, explicitly gives a 20:05 finish that evening and 26h50m. The Oregon Statesman’s 7 August Dover AP report also gives 26h50m. The Morning Register’s 8 August AP report gives 20:05 but 27h25m. Contemporary reports therefore disagree; the selected duration is not merely retrospective. No clock-standard adjustment or original-log reconciliation is inferred.

Format · Solo · 1-way

Direction · England → France

Departure · Shakespeare Cliff, Dover, England

Arrival · Calais sands, France

Stroke · Breaststroke

Escort vessel · Day Spring (Folkestone lugger) and two Dover galleys

Ratification / historical recognition · Historical swim; retrospective CSA record and trophy inscription

How this record was checked

CSA record 2463 and the Alexander Cup inscription supply the selected 26:50; museum captions support the phase dates. Newly inspected original Daily Mail and Oregon Statesman scans, both dated 7 August 1923, publish 26h50m in dispatches dated 6 August. The Daily Mail explicitly gives a 20:05 arrival that evening; the Statesman also carries that Exchange Telegraph clock and a separate Dover AP duration report. The previously inspected Morning Register AP scan of 8 August prints 27h25m. Both durations are contemporary evidence. The newspaper prize award is distinct from a ratification decision, and no original observer log has been inspected.

Channel Swimming Association: Henry Sullivan, 1923

Checked 2026-10-30

Dover Museum archive: departure photograph d80307

Checked 2026-10-30

Dover Museum archive: Alexander Cup inscription, d80344

Checked 2026-10-30

Morning Register, 8 August 1923: Associated Press report

Checked 2026-10-31

Supports · Contemporary account of Sullivan’s breaststroke, 20:05 arrival, 27h 25m report and Daily Sketch prize decision.

Limitations · Original page scan inspected as well as OCR. Reported duration conflicts with the CSA and trophy inscription. Newspaper observers are not an inspected observer log.

Daily Mail, St John’s, 7 August 1923, page 1 — American Swims Across Channel

Checked 2026-10-31

Supports · London dispatch dated 6 August, citing Exchange Telegraph: Sullivan reached Calais at 20:05 that evening in 26h50m.

Limitations · Original scan visually inspected. The subtitle erroneously says Philadelphia; the body identifies Lowell. Press reporting supplies no original timing log or time standard.

Oregon Statesman, 7 August 1923, page 2 — American Swims English Channel

Checked 2026-10-31

Supports · Dover AP dispatch dated 6 August reports completion that night in 26h50m; a separate London AP item cites Exchange Telegraph for 20:05.

Limitations · Original scan visually inspected. The London item shares the Daily Mail’s Exchange Telegraph attribution and is not independent corroboration of that clock. This earlier AP duration differs from the 8 August Morning Register AP report.

Catalina Channel

Open-water swimming · Solo swim

Sunday, 30 January 1927 (event date)

Catalina Channel, California, USA

Completed the Catalina-to-mainland crossing; the federation lists him as its second successful solo swimmer.

Elapsed time · 22h 45m

Historical account checked

How this event was checked

CCSF’s second register row records 30 January and 22:45. Its historical chapter explicitly connects Sullivan’s English and Catalina crossings and describes AAU officials accompanying the swim. Inconsistent clock details in that narrative are withheld. This is retrospective recognition of a swim predating CCSF, not a contemporary CCSF ratification.

Catalina Channel Swimming Federation — successful solos

Checked 2026-10-31

Supports · Selected historical rows.

Limitations · Register dates are retained as event dates, without inferred start or finish phase.

CCSF — A History of the Catalina Channel Swims, chapter 3

Checked 2026-10-31

Supports · PDF page 3: Sullivan’s successful 1927 crossing and prior English Channel identity.

Limitations · Published start/finish clock details do not reconcile with duration; no clocks are used.

First Channel attempt

1913

An unsuccessful England-to-France attempt began a decade-long pursuit.

Plans interrupted by war

August 1914

Returned to the United States when the outbreak of war prevented another attempt.

Further Channel attempts

1920–1921

Returned for multiple attempts in both directions before his eventual success.

First American crossing

5–6 August 1923

Completed the England-to-France swim; the recorded duration is 26h 50m, with historical timing differences.