| Schedule of Segment Reporting Information | 
 Information concerning principal geographic
areas is presented below according to the area where the activity has taken place for the years ended October 31, 2018 and 2017
respectively: 
  
    |   | 
      | 
    Marine Technology Business (Products) | 
      | 
      | 
    Marine Engineering Business (Services) | 
      | 
      | 
    Overhead | 
      | 
      | 
    Total | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Year Ended October 31, 2018 | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Revenues from External Customers | 
      | 
    $ | 
    11,449,416 | 
      | 
      | 
    $ | 
    6,570,013 | 
      | 
      | 
    $ | 
    - | 
      | 
      | 
    $ | 
    18,019,429 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Cost of Revenues | 
      | 
      | 
    1,894,808 | 
      | 
      | 
      | 
    3,462,259 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    5,357,067 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Gross Profit | 
      | 
      | 
    9,554,608 | 
      | 
      | 
      | 
    3,107,754 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    12,662,362 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Research & Development | 
      | 
      | 
    2,048,285 | 
      | 
      | 
      | 
    523,429 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    2,571,714 | 
      | 
 
    | Selling, General & Administrative | 
      | 
      | 
    2,882,049 | 
      | 
      | 
      | 
    2,366,226 | 
      | 
      | 
      | 
    1,531,606 | 
      | 
      | 
      | 
    6,779,881 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Operating Expenses | 
      | 
      | 
    4,930,334 | 
      | 
      | 
      | 
    2,889,655 | 
      | 
      | 
      | 
    1,531,606 | 
      | 
      | 
      | 
    9,351,595 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Income (Loss) from Operations | 
      | 
      | 
    4,624,274 | 
      | 
      | 
      | 
    218,099 | 
      | 
      | 
      | 
    (1,531,606 | 
    ) | 
      | 
      | 
    3,310,767 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Other Income (Expense) | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Other Income | 
      | 
      | 
    39,122 | 
      | 
      | 
      | 
    2,100 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    41,222 | 
      | 
 
    | Interest (Expense) Income | 
      | 
      | 
    (12,154 | 
    ) | 
      | 
      | 
    (59,599 | 
    ) | 
      | 
      | 
    (177,337 | 
    ) | 
      | 
      | 
    (249,090 | 
    ) | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Other Income (Expense) | 
      | 
      | 
    26,968 | 
      | 
      | 
      | 
    (57,499 | 
    ) | 
      | 
      | 
    (177,337 | 
    ) | 
      | 
      | 
    (207,868 | 
    ) | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Net Income (Loss) before income taxes | 
      | 
      | 
    4,651,242 | 
      | 
      | 
      | 
    160,600 | 
      | 
      | 
      | 
    (1,708,943 | 
    ) | 
      | 
      | 
    3,102,899 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Current income benefit (expense) | 
      | 
      | 
    133,419 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    (1,956 | 
    ) | 
      | 
      | 
    (131,463 | 
    ) | 
 
    | Deferred tax benefit | 
      | 
      | 
    - | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    1,754,169 | 
      | 
      | 
      | 
    1,754,169 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Income benefit (expense) | 
      | 
      | 
    133,419 | 
      | 
      | 
      | 
    -  | 
      | 
      | 
      | 
    1,752,213  | 
      | 
      | 
      | 
    1,885,632  | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Net Income (Loss) | 
      | 
    $ | 
    4,784,661 | 
      | 
      | 
    $ | 
    160,600 | 
      | 
      | 
    $ | 
    43,270 | 
      | 
      | 
    $ | 
    4,988,531 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Supplemental Disclosures | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Assets | 
      | 
    $ | 
    15,061,693 | 
      | 
      | 
    $ | 
    11,674,640 | 
      | 
      | 
    $ | 
    2,000,278 | 
      | 
      | 
    $ | 
    28,736,611 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Liabilities | 
      | 
    $ | 
    1,142,661 | 
      | 
      | 
    $ | 
    1,498,828 | 
      | 
      | 
    $ | 
    1,708,172 | 
      | 
      | 
    $ | 
    4,349,661 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Revenues from Intercompany Sales - eliminated from sales above | 
      | 
    $ | 
    1,176,438 | 
      | 
      | 
    $ | 
    437,387 | 
      | 
      | 
    $ | 
    3,100,000 | 
      | 
      | 
    $ | 
    4,713,825 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Depreciation and Amortization | 
      | 
    $ | 
    461,429 | 
      | 
      | 
    $ | 
    282,836 | 
      | 
      | 
    $ | 
    14,143 | 
      | 
      | 
    $ | 
    758,408 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Purchases of Long-lived Assets | 
      | 
    $ | 
    499,262 | 
      | 
      | 
    $ | 
    61,329 | 
      | 
      | 
    $ | 
    76,561 | 
      | 
      | 
    $ | 
    637,152 | 
      | 
 
 
   
    |   | 
      | 
    Marine Technology Business (Products) | 
      | 
      | 
    Marine Engineering Business (Services) | 
      | 
      | 
    Overhead | 
      | 
      | 
    Total | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Year Ended October 31, 2017 | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Revenues from External Customers | 
      | 
    $ | 
    10,986,268 | 
      | 
      | 
    $ | 
    7,038,905 | 
      | 
      | 
    $ | 
    - | 
      | 
      | 
    $ | 
    18,025,173 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Cost of Revenues | 
      | 
      | 
    2,246,881 | 
      | 
      | 
      | 
    3,810,567 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    6,057,448 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Gross Profit | 
      | 
      | 
    8,739,387 | 
      | 
      | 
      | 
    3,228,338 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    11,967,725 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Research & Development | 
      | 
      | 
    919,863 | 
      | 
      | 
      | 
    460,518 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    1,380,381 | 
      | 
 
    | Selling, General & Administrative | 
      | 
      | 
    3,220,635 | 
      | 
      | 
      | 
    2,714,054 | 
      | 
      | 
      | 
    834,638 | 
      | 
      | 
      | 
    6,769,327 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Operating Expenses | 
      | 
      | 
    4,140,498 | 
      | 
      | 
      | 
    3,174,572 | 
      | 
      | 
      | 
    834,638 | 
      | 
      | 
      | 
    8,149,708 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Income (Loss) from Operations | 
      | 
      | 
    4,598,889 | 
      | 
      | 
      | 
    53,766 | 
      | 
      | 
      | 
    (834,638 | 
    ) | 
      | 
      | 
    3,818,017 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Other Income (Expense) | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Other Income | 
      | 
      | 
    117,106 | 
      | 
      | 
      | 
    4,172 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    121,278 | 
      | 
 
    | Interest Expense | 
      | 
      | 
    (709,763 | 
    ) | 
      | 
      | 
    (56,697 | 
    ) | 
      | 
      | 
    169,449 | 
      | 
      | 
      | 
    (597,011 | 
    ) | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Other Income (Expense) | 
      | 
      | 
    (592,657 | 
    ) | 
      | 
      | 
    (52,525 | 
    ) | 
      | 
      | 
    169,449 | 
      | 
      | 
      | 
    (475,733 | 
    ) | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Net Income (Loss) before income taxes | 
      | 
      | 
    4,006,233 | 
      | 
      | 
      | 
    1,241 | 
      | 
      | 
      | 
    (665,189 | 
    ) | 
      | 
      | 
    3,342,284 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Income refund (expense) | 
      | 
      | 
    22,578 | 
      | 
      | 
      | 
    - | 
      | 
      | 
      | 
    (25,199 | 
    ) | 
      | 
      | 
    (2,621 | 
    ) | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Net Income | 
      | 
    $ | 
    4,028,810 | 
      | 
      | 
    $ | 
    1,241 | 
      | 
      | 
    $ | 
    (690,388 | 
    ) | 
      | 
    $ | 
    3,339,663 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Supplemental Disclosures | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Assets | 
      | 
    $ | 
    12,374,214 | 
      | 
      | 
    $ | 
    11,479,953 | 
      | 
      | 
    $ | 
    205,906 | 
      | 
      | 
    $ | 
    24,060,073 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total Liabilities | 
      | 
    $ | 
    1,109,003 | 
      | 
      | 
    $ | 
    1,475,442 | 
      | 
      | 
    $ | 
    7,648,208 | 
      | 
      | 
    $ | 
    10,232,653 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Revenues from Intercompany Sales - eliminated from sales above | 
      | 
    $ | 
    1,895,015 | 
      | 
      | 
    $ | 
    387,142 | 
      | 
      | 
    $ | 
    1,797,775 | 
      | 
      | 
    $ | 
    4,079,932 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Depreciation and Amortization | 
      | 
    $ | 
    528,667 | 
      | 
      | 
    $ | 
    412,220 | 
      | 
      | 
    $ | 
    12,739 | 
      | 
      | 
    $ | 
    953,626 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Purchases of Long-lived Assets | 
      | 
    $ | 
    2,419,092 | 
      | 
      | 
    $ | 
    129,989 | 
      | 
      | 
    $ | 
    12,470 | 
      | 
      | 
    $ | 
    2,561,551 | 
      | 
 
 
  
    |   | 
      | 
    USA | 
      | 
      | 
    Europe | 
      | 
      | 
    Australia | 
      | 
      | 
    Total | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | External Revenues by Geographic Locations | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Year Ended October 31, 2018 | 
      | 
    $ | 
    7,617,891 | 
      | 
      | 
    $ | 
    10,029,806 | 
      | 
      | 
    $ | 
    371,732 | 
      | 
      | 
    $ | 
    18,019,429 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Year Ended October 31, 2017 | 
      | 
    $ | 
    7,499,900 | 
      | 
      | 
    $ | 
    9,056,589 | 
      | 
      | 
    $ | 
    1,468,684 | 
      | 
      | 
    $ | 
    18,025,173 | 
      | 
 
 
 |