CW 5.bis
prototype, open cockpit.

CW 5.bis/33
1933 first production version with detachable cockpit cover.

CW 5.bis/34
1934 version with refinements.

CW 5.bis/35
1935 version with a deeper, strengthened and cleaned-up fuselage.

WOS-37 Splett
1937 derivative with different airfoil and wing shape, shorter wing struts and fuselage.
Revised cockpit and new empennage, with a conventional tailplane integral with the fuselage and fin.
CW 5.bis
prototype, open cockpit.
CW 5.bis/33
1933 first production version with detachable cockpit cover.
CW 5.bis/34
1934 version with refinements.
CW 5.bis/35
1935 version with a deeper, strengthened and cleaned-up fuselage.
WOS-37 Splett
1937 derivative with different airfoil and wing shape, shorter wing struts and fuselage. Revised cockpit and new empennage, with a conventional tailplane integral with the fuselage and fin.
Czerwiński CW 5 bis