A shipping agency acts as an intermediary between shipowners, operators, and various stakeholders involved in maritime operations. Shipping agencies provide a wide range of services to facilitate the smooth arrival, stay, and departure of vessels at ports worldwide. Two main categories of services. Husbandry services, in the context of the maritime industry, refer to a range of support services provided to ships and their crews during their port stay. The term "Owners Protective Agent (OPA)" refers to a role or service provided by a maritime agent or agency on behalf of the shipowner or operator. The OPA acts as a representative and advocate for the owner's interests, ensuring that the vessel's operations are carried out smoothly and in compliance with contractual obligations and relevant regulations.Also differences between tanker vessels and bulk carriers apply in many major ports. Long term cooperation between agent and ship owner analysis,