Related Party Transactions (Tables)

12 Months Ended

Jun. 30, 2025

Related Party Transactions [Abstract]

Schedule of Related Parties with Transactions

Related parties with transactions and related party relationships

Name of Related Party	Relationship to the Group
Mr. Shoucheng Lei	A shareholder of the Group
Ocean Master Worldwide Corporation	Controlled by Mr. Shoucheng Lei, Ms. Luan Chen and Mr. Jun Li, shareholders of the Group
Rui Da Shipping Co. Limited	Controlled by Ocean Master Worldwide Corporation
Topsheen Shipping Limited	Related to Mr. Dong Zhang
Topsheen Shipping Singapore Pte. Ltd.	Related to Mr. Dong Zhang
Topsheen bulk Singapore Pte. Ltd.	Related to Mr. Dong Zhang
Xun Da Shipping Co. Limited	Controlled by Ocean Master Worldwide Corporation
Topsheen Shipping Group Limited	Controlled by Mr. Shoucheng Lei
Nanjing Top Confidence Marine Management Co., Ltd	Controlled by Mr. Shoucheng Lei

Name of Related Party	Relationship to the Group
Mei Da Shipping Co. Limited	Controlled by Ocean Master Worldwide Corporation
Tong Da Shipping Co. Limited	Controlled by Ocean Master Worldwide Corporation
Keen Best Shipping Co Limited	Controlled by Ocean Master Worldwide Corporation
Mr. Dong Zhang	Family member of Mr. Jun Li
Mr. Qing Xu	Family member of Ms. Luan Chen
Top Corporation Shipping Limited	Controlled by Ocean Master Worldwide Corporation

Schedule of Balances Due from Related Parties and Due to Related Parties

	As of June 30, 2025		As of June 30, 2024
Topsheen Shipping Singapore Pte. Ltd.(1)	$	616,279	$	50,125
Tong Da Shipping Co. Limited(2)		143,277		—
Mei Da Shipping Co. Limited(2)		159,638		—
Keen Best Shipping Co Limited(2)		99,121		86,817
Total	$	1,018,315	$	136,942

(1)      The balance mainly represented consideration for time charter accounts receivable from Topsheen Shipping Singapore Pte. Ltd.

(2)      The balance represents the accrued management fees from related parties for vessel management services.

	As of June 30, 2025		As of June 30, 2024
Topsheen Shipping Singapore Pte. Ltd.(1)	$	433,125	$	213,209

​(1)      The balance represents the advance charter hire payments from Topsheen Shipping Singapore Pte. Ltd.

As of June 30, 2025 and 2024, the balances due from related parties were as follows:

	As of June 30, 2025		As of June 30, 2024
Ocean Master Worldwide Corporation	$	—	$	71,662
Topsheen Shipping Singapore Pte. Ltd(1)		331,948		331,656
Total	$	331,948	$	403,318

​(1)      The balance represents the outstanding bunker receivable from Topsheen Shipping Singapore Pte. Ltd for time charter service provided by the Group.

As of June 30, 2025 and 2024, the balances due to related parties were as follows:

	As of June 30, 2025		As of June 30, 2024
Topsheen Shipping Group Limited(1)		36,584		45,504
Nanjing Top Confidence Marine Management Co., Ltd(1)		14,381		17,683
Due to shareholder and affiliate(2)		24,490,720		24,776,946
Ocean Master Worldwide Corporation		11,546		11,546
Total	$	24,553,231	$	24,851,679

(1)      The balances mainly represented the expenses paid on behalf of the Group.

(2)      The balances mainly represented non-interest-bearing loans from Mr. Shoucheng Lei and due on demand.

Services provided to related parties

	For the year ended June 30, 2025		For the year ended June 30, 2024		For the year ended June 30, 2023
Topsheen Shipping Singapore Pte. Ltd. (Time charter revenue)	$	18,682,031	$	12,281,701	$	13,999,534
Mei Da Shipping Co. Limited (Vessel management services revenue)		1,481,220		1,565,711		2,052,046
Tong Da Shipping Co. Limited (Vessel management services revenue)		1,457,911		1,492,521		1,752,601
Rui Da Shipping Co. Limited (Vessel management services revenue)		—		—		420,737
Xun Da Shipping Co. Limited (Vessel management services revenue)		—		—		619,504
Topsheen Bulk Singapore Pte Ltd (Time charter revenue)		624,337		—		—
Keen Best Shipping Co Limited (Vessel management services revenue)		1,128,998		974,963		—
Total	$	23,374,497	$	16,314,896	$	18,844,422

Short-term office lease expense from a related party

	For the year ended June 30, 2025		For the year ended June 30, 2024		For the year ended June 30, 2023
Mr. Jun Li’s affiliate	$	27,684	$	27,443	$	28,571

General and administrative expenses shared with a related party

	For the year ended June 30, 2025		For the year ended June 30, 2024		For the year ended June 30, 2023
Topsheen Shipping Group Co., Ltd	$	92,581	$	108,353	$	75,592