in a plimsoll line, what does the abbreviation T.F stand for???

I had no idea what any of these terms are.

So I did a very simple Google search and on the very first page learned that
TF stands for Tropical Fresh Water
and that the
"plimsoll line" is an imaginary line marking the level at which a ship or boat floats in the water

Wow, isn't Google marvelous?
Please learn to use it for your kind of questions.

Please note that we don't do students' homework for them. Once YOU have come up with attempted answers to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to comment on your thinking.

You need to learn to go back into your textbook or study materials to find these answers or learn to conduct simple searches. Enter each of the terms you listed until you find a definition that matches.

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To find the meaning of the abbreviation "T.F" in the context of a plimsoll line, which is a marking found on the sides of ships indicating their loading limits, you can use a few different methods:

1. Consult a Maritime Dictionary: Search for a reliable maritime dictionary online or in print. Look for terms related to plimsoll lines or ship markings and check for the abbreviation "T.F" in the glossary or index.

2. Research Official Regulations: Look for official regulations or guidelines regarding plimsoll lines from reputable maritime organizations or governing bodies. These regulations often include explanations of various markings, including abbreviations like "T.F." Check the relevant sections or appendices for explanations of abbreviations.

3. Contact Maritime Experts: Reach out to experts in the maritime industry, such as shipbuilders, naval architects, or captains, who may have extensive knowledge of ship markings and abbreviations. You can contact them through online forums, professional organizations, or by directly reaching out to them via email or social media.

Remember, the specific meaning of "T.F" in the context of a plimsoll line may vary depending on the country, era, or specific regulations in place. It is essential to consider the context and sources specific to the time and region you are referring to in order to find an accurate answer.