About Us

ISC Corporation was established by Tomoaki Horiuchi, Managing Director, in 2001 as a shipbroking company focusing on chemical tankers. We provide broking services mainly for new shipbuilding, S&P contracts, time charters and wide ranging marine technical consultancy.

Since establishment, ISC has acted as a contracting broker with a total contract value of well over $1.5 billion (between owners and shipyards); it includes 50+ new shipbuilding contracts, 60+ S&P transactions, and dispatching superintendents to oversee 40+ projects.
Many of these vessels have been chartered by leading tanker operators including Stolt-Nielsen, Odfjell, MOL Chemical Tankers (formerly Tokyo Marine), ENEOS Ocean, Asahi Shosen, IMC, MISC etcetera.

With our broad network in the industry, we will also expand our business in collaboration with other companies even in different fields.

With this Slogan in mind: “Full service shipbroking from start to finish”, we ensure to support your business at any stage of a vessel’s commercial and technical life.

Company Profile

Company Name ISC Corporation
Managing Director Tomoaki Horiuchi
Foundation Date June 19, 2001
Capital JPY 10,000,000
Banker Mizuho Bank, Ginza Branch; Sumitomo Mitsui Banking Corporation, Hachioji Branch
TEL +81-3-6205-4838
FAX +81-3-6205-4839
Location 〒105-0004 2F shimbashi Kikaku Building,
3-4-10 Shimbashi, Minato-ku, Tokyo, 105-0004, Japan


Access:10 min from Toranomon ST, Ginza Line
5 min from Shimbashi ST, JR Line
7 min from Uchisaiwaicho ST, Toei Mita Line

Member’s Profile

Managing Director - Tomoaki (Tommy) Horiuchi | Ship Broker
With most of his career spent involved in the commercial and technical management of chemical tankers in international trade, Tommy has established a reputation as one of the worlds’ foremost chemical tanker newbuilding brokers.
An engineering graduate from Maritime College, he has excellent connections with international charterers and chemical tanker operator/broker, which most of relationships were built during his career in London in 1980s. Of course he has firm relationships with Japanese shipyards, financiers, insurance companies and trading houses as well.

  • New business development including new shipbuilding
  • S&P consulting
Shizuo Watanabe | Technical Director
Shizuo Watanabe has long experience working as a Chief Engineer for major U.S. tanker operators, followed by his appointment as technical director for a Japanese-owned fleet of stainless and coated product tankers. He is an expert in all technical issues relating to the transport of chemicals in bulk. With an established reputation as an uncompromising technical consultant and surveyor, he takes pride in the high level of scrutiny that he applies in all his activities.
  • Overall technical consulting
Yuji Ogawa | Superintendent
Having graduated from Merchant Marine University as a marine engineer, Yuji Ogawa’s seagoing experience included 4 years working aboard car carriers, container ships and LNG carriers for a major Japanese shipping company, before he came ashore to work as a damage and stowage surveyor. The next steps of his career involved taking responsibility for the technical management of specialized tankers such as molten sulphur carriers for Fuji Marine and the LNG Carriers for NYK LNG Ship management. He joined ISC in October 2014 and is working as the company’s principal technical superintendent, responsible for handling technical consultancy, plan approvals, inspections and high-value newbuilding supervision contracts for major Japanese and international clients.

  • Technical supervision
  • Plan checker/approver
  • Inspection supervision
Kensho Morihara | New building/S&P support
His career in Chemical Tanker field started in Tokyo Marine with 7-year experience (including 2 year posting in Singapore). In cargo chartering, ship chartering and S&P experience respectively. He joined ISC September 2014 and in charge of general support for New building project and S&P business.

  • New shipbuilding project assistance
  • S&P business assistance
Madoka Higashi | S&P, New building, & New Project Support
She joined ISC in May 2015 after working at a ship owning company for 10 years and experienced a variety of work assignment such as assistant superintendent and accounting. She supports a variety of services ISC Corp provides.

  • S&P business assistance
  • New project assistance
Hiroki Katagiri | Superintendent
After graduation, Katagiri-san spent 3 years at sea, working aboard a VLCC as an Second and Third Officer. He then came ashore to join a major chemical tanker operator and worked for 16 years as a Marine Supervisor and Operations Manager. From 2016, he was employed for 3 years as a surveyor by Class NK’s Imabari office. His experience there included surveys of newbuildings & existing vessels and ISM Auditing. Katagiri-san joined ISC in April 2019 where he devotes himself to providing technical consultancy services, making full use of his broad knowledge and experience.

  • Technical supervision
  • Plan checker/approver
  • Inspection supervision
Takuro Nishikawa  | Operator
A Project Leader of Operation Contract which started in 2017. He is a specialist of cargo booking, operation and Time Charter fixing of inshore bulker.

  • Bulker Operation
  • New Bulker Contract Fixing