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Property and Equipment, net (Tables)
6 Months Ended
Oct. 31, 2023
Property, Plant and Equipment [Abstract]  
Schedule of Components of Property and Equipment

The components of property and equipment, net as of October 31, 2023 and April 30, 2023 consisted of the following:

  

   October 31, 2023   April 30, 2023 
   (in thousands) 
Equipment  $1,040   $783 
Computer equipment & software   728    700 
Office furniture & equipment   422    386 
Leasehold improvements   628    611 
Leased WAM-V’s   620    371 
Leased Buoys   111     
Property and equipment, gross   3,549    2,851 
Less: accumulated depreciation   (1,743)   (1,571)
Property and equipment, net  $1,806   $1,280