These really look like they are the same symbol, presented slightly differently and both are for Navigation. Definitely not a smoking gun but, worth noting.
The 10th century traveller Ahmed Ibn Fadlan, Muhammad al-Idrisi 820-910, al-Tartushi 1059-1121 Ibn Khurradadhbih / Ibn Khordadbeh and al-Mas’udi 896-956 all ckaim cintact with "The Saqalibah, meaning as “fair-haired, ruddy-complexioned population of Central, Eastern and North-Eastern Europe”
"They keep their clothes clean and the men adorn themselves with armbands of gold... They are generous to each other, honour their guests and treat well those who seek refuge with them, and all who come to visit them. They do not allow anyone to annoy or harm these. And whenever anyone dares to treat them unfairlythey help and defend them."
This was among the highest compliments in 11th century Isamic culture.
Next we have an Islamic Script and drawing that clearly resembles a Viking ship.
Finally "The Smoking gun". Phenylketonuria (PKU) is a rare genetic condition that causes an amino acid called phenylalanine to build up in the body. Genes don't hide historic truth as well as books, they reveal alot. PKU is found most prevalently among Northern Europeans and Middle Eastern people's. How could this possibly be ? The only answer is the two cultures interbred.