 Sources label it the "Alsema Sagitta", "Vliegtuigbouw Sagitta", "N.V. Vliegtuigbouw 013 Sagitta", "Dutch Sagitta", "N.V. Vliegtuigbouw Sagitta 013" and "N.V. Vliegtuigbouw Sagitta-013".The US type certificate erroneously lists it as the "N.V. VLIEGTUIGBOUW Segitta (sic) 013" and catalogs it in their database under "Vilegtuigbouw (sic), N.V., 013".The Sagitta was designed by Alsema between 1957-61 specifically for the then-new FAI Standard Class.