We present H i synthesis maps of the edge-on starburst NGC 5433 and its environment , obtained with the VLA in its C and D configurations .
The observations and spectral model residuals of the main disc emission in NGC 5433 reveal 3 extraplanar features .
We associate 2 of these features with coherent extraplanar extensions across multiple spectral channels in our data , including a complete loop in position-velocity space .
Interpreting the latter as an expanding shell we derive a corresponding input energy of 2 \times 10 ^ { 54 } ergs , comparable to that for the largest supershells found in the Galaxy and those in other edge-on systems .
NGC 5433 is in a richer environment than previously thought .
We confirm that KUG 1359+326 is a physical companion to NGC 5433 and find two new faint companions , both with Minnesota Automated Plate Scanner identifications , that we label SIS-1 and SIS-2 .
Including the more distant IC 4357 , NGC 5433 is the dominant member of a group of at least 5 galaxies , spanning over 750 kpc in a filamentary structure .
A variety of evidence suggests that interactions are occurring in this group .
While a number of underlying mechanisms are consistent with the morphology of the high-latitude features in NGC 5433 , we argue that environmental effects may play a role in their generation .