Quarterly report pursuant to Section 13 or 15(d)

Segment Analysis - Schedule of Segment Reporting Information (Details)

Segment Analysis - Schedule of Segment Reporting Information (Details) - USD ($)	3 Months Ended						9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Jul. 31, 2020	Jul. 31, 2019	Oct. 31, 2019
Revenues from External Customers	$ 5,396,036			$ 6,668,498			$ 15,366,233	$ 19,210,278
Cost of Revenues	1,776,868			2,120,680			5,547,211	6,404,726
Gross Profit	3,619,168			4,547,818			9,819,022	12,805,552
Research & Development	772,641			631,690			2,414,547	1,948,243
Selling, General & Administrative	1,525,469			1,775,909			4,950,357	5,091,866
Total Operating Expenses	2,298,110			2,407,599			7,364,904	7,040,109
Income (Loss) from Operations	1,321,058			2,140,219			2,454,118	5,765,443
Other Income	3,871			6,398			16,384	65,467
Interest Expense	(16,580)			(20,275)			(54,650)	(69,683)
Total Other Income (Expense)	(12,709)			(13,877)			(38,266)	(4,216)
Net Income (Loss) before Income Taxes	1,308,349			2,126,342			2,415,852	5,761,227
Current Tax Benefit (Expense)	1,584			(38)			13,063	77,954
Deferred Tax (Expense) Benefit	(287,180)			(350,617)			(324,469)	(850,987)
Total Income Tax (Expense) Benefit	(285,596)			(350,655)			(311,406)	(773,033)
Net Income (Loss)	1,022,753	$ (265,080)	$ 1,346,773	1,775,687	$ 1,973,494	$ 1,239,013	2,104,446	4,988,194
Total Assets	37,268,045			33,343,909			37,268,045	33,343,909	$ 34,511,244
Total Liabilities	3,897,216			4,428,196			3,897,216	4,428,196	$ 3,883,471
Revenues from Intercompany Sales - eliminated from sales above	1,857,288			888,857			2,935,639	3,374,253
Depreciation and Amortization	309,915			200,194			643,335	594,606
(Sales) Purchases of Long-lived Assets	341,180			(221,822)			831,578	1,877,892
Marine Technology Business (Products) [Member]
Revenues from External Customers	3,053,070			3,231,510			8,377,081	9,481,229
Cost of Revenues	653,117			592,585			1,715,647	1,798,800
Gross Profit	2,399,953			2,638,925			6,661,434	7,682,429
Research & Development	394,332			503,540			1,393,757	1,533,544
Selling, General & Administrative	496,772			590,981			2,056,947	2,089,442
Total Operating Expenses	891,104			1,094,521			3,450,704	3,622,986
Income (Loss) from Operations	1,508,849			1,544,404			3,210,730	4,059,443
Other Income	3,745			6,398			16,242	65,467
Interest Expense	(1,718)			(2,197)			(7,345)	(8,063)
Total Other Income (Expense)	2,027			4,201			8,897	57,404
Net Income (Loss) before Income Taxes	1,510,876			1,548,605			3,219,627	4,116,847
Current Tax Benefit (Expense)	5,532			(5,172)			24,968	20,496
Deferred Tax (Expense) Benefit	(236,356)			(47,768)			(315,849)	(199,073)
Total Income Tax (Expense) Benefit	(230,824)			(52,940)			(290,881)	(178,577)
Net Income (Loss)	1,280,052			1,495,665			2,928,746	3,938,270
Total Assets	22,149,613			18,200,970			22,149,613	18,200,970
Total Liabilities	1,737,007			2,169,195			1,737,007	2,169,195
Revenues from Intercompany Sales - eliminated from sales above	498,312			136,128			801,134	1,044,595
Depreciation and Amortization	261,975			132,392			539,567	391,516
(Sales) Purchases of Long-lived Assets	317,892			(262,062)			758,619	1,803,206
Marine Engineering Business (Services) [Member]
Revenues from External Customers	2,342,966			3,436,988			6,989,152	9,729,049
Cost of Revenues	1,123,751			1,528,095			3,831,564	4,605,926
Gross Profit	1,219,215			1,908,893			3,157,588	5,123,123
Research & Development	352,625			32,991			830,008	130,205
Selling, General & Administrative	515,547			659,398			1,678,882	1,864,503
Total Operating Expenses	868,172			692,389			2,508,890	1,994,708
Income (Loss) from Operations	351,043			1,216,504			648,698	3,128,415
Other Income	126						142
Interest Expense	(4,672)			(2,150)			(12,313)	(11,849)
Total Other Income (Expense)	(4,546)			(2,150)			(12,171)	(11,849)
Net Income (Loss) before Income Taxes	346,497			1,214,354			636,527	3,116,566
Current Tax Benefit (Expense)				4,460				39,445
Deferred Tax (Expense) Benefit	15,155			(214,144)			145,713	(447,540)
Total Income Tax (Expense) Benefit	15,155			(209,684)			145,713	(408,095)
Net Income (Loss)	361,652			1,004,670			782,240	2,708,471
Total Assets	14,439,917			13,876,685			14,439,917	13,876,685
Total Liabilities	1,392,816			870,492			1,392,816	870,492
Revenues from Intercompany Sales - eliminated from sales above	8,976			75,729			109,505	304,658
Depreciation and Amortization	43,263			63,724			89,688	191,402
(Sales) Purchases of Long-lived Assets	23,288			5,937			24,440	40,383
Overhead [Member]
Revenues from External Customers
Cost of Revenues
Gross Profit
Research & Development	25,684			95,159			190,782	284,494
Selling, General & Administrative	513,150			525,530			1,214,528	1,137,921
Total Operating Expenses	538,834			620,689			1,405,310	1,422,415
Income (Loss) from Operations	(538,834)			(620,689)			(1,405,310)	(1,422,415)
Other Income
Interest Expense	(10,190)			(15,928)			(34,992)	(49,771)
Total Other Income (Expense)	(10,190)			(15,928)			(34,992)	(49,771)
Net Income (Loss) before Income Taxes	(549,024)			(636,617)			(1,440,302)	(1,472,186)
Current Tax Benefit (Expense)	(3,948)			674			(11,905)	18,013
Deferred Tax (Expense) Benefit	(65,979)			(88,705)			(154,333)	(204,374)
Total Income Tax (Expense) Benefit	(69,927)			(88,031)			(166,238)	(186,361)
Net Income (Loss)	(618,951)			(724,648)			(1,606,540)	(1,658,547)
Total Assets	678,515			1,266,254			678,515	1,266,254
Total Liabilities	767,393			1,388,509			767,393	1,388,509
Revenues from Intercompany Sales - eliminated from sales above	1,350,000			675,000			2,025,000	2,025,000
Depreciation and Amortization	4,677			4,078			14,080	11,688
(Sales) Purchases of Long-lived Assets				$ 34,303			$ 48,519	$ 34,303