Spilhaus Qblique World Ocean Map in an Ellipse (no established name, but it seems a good choice)
Remarks
Oblique aspect of the Hammer projection to show the world ocean (almost) without interruptions.
Usually shown in portrait orientation, here rotated by 90° CCW for technical reasons.
See my blogposts about the Spilhaus projections and 13 Projections for 2022 (Part 5).
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Specified in [square brackets]: Actual size of the projection
(minus the black or white background). When marked with [≈], sizes with and without
background are approx. the same.